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      JJ Peterka Utah Mammoth Fanatics Home Breakaway Jersey - Black

      $85.99 USD
      $137.99 USD

      Size Guide

      Jersey Pro Center Size Guide

      The right size, the first time. All charts below use international standard body measurements — in inches and centimeters — covering jerseys, shorts, jackets, hoodies and pants across NFL, NBA, MLB, NHL and Soccer.

      Not sure which size to pick?

      Order the size you think fits best, then simply email your height, chest, and waist measurements to jerseycare@outlook.com. Our specialists will double-check your order before shipping — if another size fits you better, we will update it automatically!

      Quick Jump: 1. How to Measure 2. Fit by League 3. Quick Size Finder 4. NFL Football 5. NBA Basketball 6. MLB Baseball 7. NHL Hockey 8. Soccer Jerseys 9. Youth & Toddler 10. Shorts 11. Jackets & Hoodies 12. Pants & Joggers 13. International Conversions 14. Sizing FAQ

      1. How to Measure

      Take these measurements over a thin t-shirt (never outerwear), standing relaxed. Use a soft measuring tape.

      1. Chest (Most Important)

      Measure around the fullest part of your chest, directly under the armpits. Keep the tape parallel to the floor and don't puff your chest out.

      2. Waist

      Measure around your natural waistline — the narrowest part of your torso, usually just above the belly button. Key for shorts & pants.

      3. Hips

      Stand with feet together and measure around the fullest part of your hips and glutes. Crucial for track pants and athletic shorts.

      4. Body Length

      Measure from the highest point of your shoulder (next to the collar) straight down to where you want the hem to sit.

      5. Sleeve Length

      For long-sleeve jerseys and jackets: measure from the shoulder seam down to your wrist with your arm slightly bent.

      6. Inseam (Pants)

      Measure from your crotch straight down to your ankle bone along the inside of your leg to find your ideal pant length.

      2. Fit by League (Overview)

      Each major sports league designs jerseys with a distinct traditional silhouette.

      League Cut Style How It Should Feel & Fit Advice
      Soccer Athletic / Slim Close to the body. If you are between sizes or prefer a streetwear look over t-shirts, size up.
      NBA Basketball Standard / Long Relaxed through chest and shoulders with an elongated hem. True to size; size up if layering over hoodies.
      NFL Football Roomy / Boxy Classic oversized game-day cut with broad shoulders. Plenty of room for hoodies. Order true size or size down for tailored fit.
      MLB Baseball Full / Button-Front Relaxed traditional baseball cut with extra room in chest. True to size; fits comfortably over casual layers.
      NHL Hockey Very Loose / Generous The loosest cut of all leagues. Wide through body with extra-long sleeves. Never size up; order true size.

      3. Quick Size Finder by Chest Measurement

      Locate your chest measurement to see your recommended size across all five sports leagues at a glance.

      Chest (Inches) Chest (cm) Soccer NBA NFL MLB NHL
      34–37" 86–94 cm S S S S S
      38–41" 97–104 cm M M M M M
      42–45" 107–114 cm L L L L L
      46–49" 117–124 cm XL XL XL XL XL
      50–53" 127–135 cm 2XL 2XL 2XL 2XL 2XL
      54–57" 137–145 cm 3XL 3XL 3XL 3XL 3XL
      58"+ 147+ cm 4XL 4XL 4XL / 5XL 4XL / 5XL 4XL / 5XL

      4. NFL Football Jerseys

      Roomy, boxy supporter replica cut. Built for game-day comfort and layering over hoodies.

      Men's NFL Jerseys
      Size Chest (in) Chest (cm) Waist (in) Length (in) Length (cm)
      S 35–37.5" 89–95 cm 29–32" 30.0" 76 cm
      M 37.5–41" 95–104 cm 32–35" 31.0" 79 cm
      L 41–44" 104–112 cm 35–38" 32.0" 81 cm
      XL 44–48.5" 112–123 cm 38–43" 33.0" 84 cm
      2XL 48.5–53.5" 123–136 cm 43–47.5" 34.0" 86 cm
      3XL 53.5–58" 136–147 cm 47.5–52" 35.0" 89 cm
      4XL 58–63" 147–160 cm 52–57" 36.0" 91 cm
      Women's NFL Jerseys (Contoured Cut)
      Size Bust / Chest (in) Bust / Chest (cm) Waist (in) Length (in) US Numeric Size
      S 33–35" 84–89 cm 26–28" 27.0" 4–6
      M 35–38" 89–97 cm 28–31" 27.5" 8–10
      L 38–41" 97–104 cm 31–34" 28.0" 12–14
      XL 41–44.5" 104–113 cm 34–38" 28.5" 16–18
      2XL 44.5–48.5" 113–123 cm 38–42" 29.0" 20–22
      Youth NFL Jerseys
      Youth Size Age Range Chest (in) Chest (cm) Length (in) Length (cm) Height (in)
      Youth S (8) 7–8 Yrs 26–28" 66–71 cm 23.0" 58 cm 50–54"
      Youth M (10-12) 9–11 Yrs 28–30" 71–76 cm 25.0" 64 cm 55–59"
      Youth L (14-16) 12–13 Yrs 31–33" 79–84 cm 27.0" 69 cm 60–63"
      Youth XL (18-20) 14–16 Yrs 34–36" 86–91 cm 29.0" 74 cm 64–67"

      5. NBA Basketball Jerseys

      Sleeveless standard athletic cut with extended length. Measurements for men, women, and youth notes.

      Men's NBA Swingman Jerseys
      Size Chest (in) Chest (cm) Length (in) Length (cm) Shoulder Width (in)
      S 37–39" 94–99 cm 28.5" 72 cm 17.0"
      M 39–41" 99–104 cm 29.5" 75 cm 18.0"
      L 41–43" 104–109 cm 30.5" 77 cm 19.0"
      XL 43–46" 109–117 cm 31.5" 80 cm 20.0"
      2XL 48–52" 122–132 cm 32.0" 81 cm 21.5"
      3XL 52–56" 132–142 cm 33.0" 84 cm 22.5"
      Women's NBA Jerseys
      Size Bust (in) Bust (cm) Waist (in) Length (in)
      S 32–34" 81–86 cm 25–27" 25.5"
      M 34–36" 86–91 cm 27–29" 26.5"
      L 36–39" 91–99 cm 29–32" 27.5"
      XL 39–42" 99–107 cm 32–35" 28.5"
      🏀
      Youth NBA Jerseys

      Youth NBA jerseys follow the same sizing as the general youth chart in Section 9 (S / M / L / XL by age and height).

      6. MLB Baseball Jerseys

      Traditional full button-front styling. Relaxed profile through chest and shoulders.

      Men's MLB Jerseys
      Size Chest (in) Chest (cm) Length (in) Length (cm) Sleeve (in)
      S 35–37.5" 89–95 cm 30.0" 76 cm 18.5"
      M 37.5–41" 95–104 cm 31.0" 79 cm 19.0"
      L 41–44" 104–112 cm 32.0" 81 cm 19.5"
      XL 44–48.5" 112–123 cm 33.0" 84 cm 20.0"
      2XL 48.5–53.5" 123–136 cm 34.0" 86 cm 20.5"
      3XL 53.5–58" 136–147 cm 35.0" 89 cm 21.0"
      Women's MLB Jerseys
      Size Bust (in) Bust (cm) Waist (in) Length (in)
      S 33–35" 84–89 cm 26–28" 26.5"
      M 35–37.5" 89–95 cm 28–30.5" 27.0"
      L 37.5–40.5" 95–103 cm 30.5–33.5" 27.5"
      XL 40.5–44" 103–112 cm 33.5–37" 28.0"

      7. NHL Hockey Jerseys

      The roomiest cut in all sports. Wide torso and oversized sleeves meant to replicate ice-ready sweaters.

      Men's NHL Breakaway Jerseys
      Size Chest (in) Chest (cm) Length (in) Length (cm) Sleeve (in)
      S 40–42" 102–107 cm 31.0" 79 cm 25.0"
      M 43–45" 109–114 cm 32.0" 81 cm 26.0"
      L 46–48" 117–122 cm 33.0" 84 cm 27.0"
      XL 49–51" 124–130 cm 33.5" 85 cm 27.5"
      2XL 52–55" 132–140 cm 34.0" 86 cm 28.0"
      3XL 55–58" 140–147 cm 35.0" 89 cm 29.0"

      8. Football / Soccer Jerseys

      Supporter replica fan fit. Athletic cut — size up for a looser streetwear fit or for layering.

      Men's / Unisex Soccer Jerseys
      Size Chest (in) Chest (cm) Length (in) Length (cm) Weight Recommendation
      S 35–37" 89–94 cm 27.5" 70 cm 55–65 kg (120–143 lbs)
      M 38–40" 97–102 cm 28.5" 72 cm 65–75 kg (143–165 lbs)
      L 41–43" 104–109 cm 29.5" 75 cm 75–85 kg (165–187 lbs)
      XL 44–46" 112–117 cm 30.5" 77 cm 85–95 kg (187–209 lbs)
      2XL 47–49" 119–124 cm 31.5" 80 cm 95–105 kg (209–231 lbs)
      3XL 50–52" 127–132 cm 32.5" 83 cm 105–115 kg (231–253 lbs)
      4XL 53–55" 135–140 cm 33.5" 85 cm 115+ kg (253+ lbs)
      Women's Soccer Jerseys (Tapered Waist)
      Size Bust / Chest (in) Bust / Chest (cm) Waist (in) Length (in) Length (cm) US Dress Size
      XS 30–32" 76–81 cm 24–25" 25.0" 64 cm 2–4
      S 32–34" 81–86 cm 25–27" 25.5" 65 cm 4–6
      M 34–36" 86–91 cm 27–29" 26.0" 66 cm 8–10
      L 36–39" 91–99 cm 29–32" 27.0" 68 cm 12–14
      XL 39–42" 99–107 cm 32–35" 27.5" 70 cm 16–18

      9. Youth & Toddler Sizes

      Unisex sizing consistent across all sports leagues. Sized by chest and height.

      Youth Sizes (Ages 7–18)
      Youth Size Ages Chest (in) Chest (cm) Height (in) Height (cm)
      Youth S (8) 7–8 Yrs 26–27" 66–69 cm 50–54" 127–137 cm
      Youth M (10-12) 9–12 Yrs 28–30" 71–76 cm 55–60" 140–152 cm
      Youth L (14-16) 13–15 Yrs 31–33" 79–84 cm 61–63" 155–160 cm
      Youth XL (18-20) 16–18 Yrs 34–36" 86–91 cm 64–67" 163–170 cm
      Toddler Sizes (Ages 2–6)
      Toddler Size Age Range Chest (in) Chest (cm) Recommended Weight
      2T 1–2 Yrs 20–21" 51–53 cm 24–28 lbs (11–13 kg)
      3T 2–3 Yrs 21–22" 53–56 cm 28–32 lbs (13–15 kg)
      4T 3–4 Yrs 22–23" 56–58 cm 32–36 lbs (15–16 kg)

      10. Shorts (Soccer, Basketball & Training)

      Elastic waist with interior/exterior drawstring closure. Sized by natural waist.

      Size Waist (in) Waist (cm) Hip (in) Hip (cm) Inseam (in)
      S 29–31" 74–79 cm 35–37" 89–94 cm 7.0"
      M 32–34" 81–86 cm 38–40" 97–102 cm 7.5"
      L 35–37" 89–94 cm 41–43" 104–109 cm 8.0"
      XL 38–40" 97–102 cm 44–46" 112–117 cm 8.5"
      2XL 41–44" 104–112 cm 47–49" 119–124 cm 9.0"

      11. Jackets & Hoodies

      Track jackets, windbreakers, varsity bombers, and fleece hoodies. Layer-friendly cut.

      Size Chest (in) Chest (cm) Body Length (in) Body Length (cm) Sleeve Length (in)
      S 36–38" 91–97 cm 27.0" 69 cm 33.5"
      M 39–41" 99–104 cm 28.0" 71 cm 34.5"
      L 42–44" 107–112 cm 29.0" 74 cm 35.5"
      XL 45–48" 114–122 cm 30.0" 76 cm 36.5"
      2XL 49–52" 124–132 cm 31.0" 79 cm 37.5"
      3XL 53–56" 135–142 cm 32.0" 81 cm 38.5"

      12. Pants, Joggers & Track Pants

      Drawstring waist with athletic taper. Check waist first, then inseam for height.

      Size Waist (in) Waist (cm) Hip (in) Hip (cm) Inseam (in) Inseam (cm)
      S 29–31" 74–79 cm 36–38" 91–97 cm 30.0" 76 cm
      M 32–34" 81–86 cm 39–41" 99–104 cm 30.5" 77 cm
      L 35–37" 89–94 cm 42–44" 107–112 cm 31.0" 79 cm
      XL 38–41" 97–104 cm 45–47" 114–119 cm 31.5" 80 cm
      2XL 42–45" 107–114 cm 48–50" 122–127 cm 32.0" 81 cm

      13. International Conversions

      Shopping from outside North America? Convert your local regional sizing to our US standard sizing.

      Men's Tops Conversion
      US / Store Size UK / AU EU / Germany France / Spain Italy Japan
      S 36 46 46 46 M
      M 38–40 48–50 48–50 48–50 L
      L 42–44 52–54 52–54 52–54 XL / LL
      XL 46–48 56–58 56–58 56–58 2XL / 3L
      2XL 50–52 60–62 60–62 60–62 3XL / 4L
      3XL 54–56 64–66 64–66 64–66 4XL / 5L
      Women's Tops Conversion
      US / Store Size UK / AU EU / Germany France / Spain Italy
      XS 6 32 34 38
      S 8–10 34–36 36–38 40–42
      M 12–14 38–40 40–42 44–46
      L 16–18 42–44 44–46 48–50
      XL 20–22 46–48 48–50 52–54

      14. Frequently Asked Questions About Sizing

      What if I'm not sure which size to order?
      Order the size you think fits best, then simply send us your height, chest, and waist measurements via email to jerseycare@outlook.com. Our specialists will check your dimensions before dispatch and ensure you receive the right fit.
      I am between two sizes — which should I choose?
      When in doubt, always size up. A slightly roomier jersey is comfortable, breathable, and easy to layer over t-shirts or hoodies. A jersey that is too tight rarely gets worn.
      Do jerseys shrink after washing?
      No. Our jerseys are made of premium recycled technical polyester mesh which is dimensionally stable and pre-shrunk. As long as you wash in cold water (30°C) and hang dry, shrinkage is less than 1%.
      Can I wear an NFL or NHL jersey over a hoodie?
      Yes! NFL and NHL jerseys are traditionally cut roomy and boxy specifically for this game-day look. Your normal t-shirt size will easily accommodate a standard hoodie. If you wear an extra-thick fleece hoodie, consider going up one size.

      Jersey Pro Center Fit & Delivery Guarantee

      All orders qualify for 30-day free returns and exchanges. Free worldwide tracked delivery applies to all orders over $57. If your jersey doesn't fit the way you like, our team will exchange it hassle-free.

      Jersey Pro Center · About Us · Contact Us · Shipping Policy · Returns & Refunds · Size Guide · Track Your Order
      Size

      • Free Shipping Over $57

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      QUICK ANSWER

      This Utah Mammoth home jersey is a fan-version replica built from breathable recycled polyester. It carries the official Utah Mammoth crest and NHL colourway, ships worldwide in 7-15 business days, and qualifies for free shipping on orders over $57.

      ✓ Checked by hand before dispatch
      ✓ Secure encrypted checkout
      ✓ Real people on support
      ✓ Plain packaging, safe to gift
      ✓ Colourfast fabric guaranteed
      ✓ No hidden fees at checkout

      ✓ You have unlocked FREE insured worldwide shipping — this item already clears the $57 threshold.

      Utah Mammoth Home Jersey

      The test of a supporter jersey is not the first hour but the fourth. This one is built to stay comfortable well past the final whistle.

      Honest note: the jersey arrives feeling a touch firmer than it will after a few washes. That is normal, and it softens nicely.

      Why supporters pick this one
      • Printed neck tape instead of a scratchy woven label
      • Weighs under 250g — packs flat for travel
      • Drops at the back hem to stay put when seated
      • Suitable for matchday, casual wear and five-a-side
      • Twin-needle stitched hem and cuffs for longer life
      SpecificationProduct detail
      Team & schoolUtah Mammoth (current)
      Kit categoryHome
      Version / fitReplica / a relaxed regular fit built for all-day wear
      Fabrication100% breathable recycled polyester (interlock mesh)
      EmbellishmentsHeat-sealed crest & screen-applied detailing
      Fit & sizingAdult S, M, L, XL, 2XL (true to US/EU standard)
      Care standardMachine wash cold inside out, hang dry
      Before you choose a size

      The single most common reason for a return is expecting a player-issue fit. This is the fan cut: comfortable, forgiving, and designed to be worn for hours rather than ninety minutes.

      Open mesh panels sit along the flank and under the arm — the places heat actually builds — while the body keeps enough density to stay opaque.

      Custom printing & personalisation

      Add official-style lettering for JJ Peterka or create your own name and number — printed with a flexible film that resists cracking through the wash.

      Design accents: Breakaway ventilated build

      How it fits and feels

      Sizing runs a half-size generous. Most buyers are happy with their usual size; those wanting a slim look often size down.

      The material has a soft hand for something this technical. It does not rustle, and it does not feel plasticky against the skin.

      Stitch density is higher at stress points: underarm, side seam, and the collar join.

      Where you will wear it

      Lighting is unforgiving on colour, so the Utah Mammoth shade is matched deliberately rather than approximated.

      A safe gift for the Utah Mammoth supporter who already owns everything, largely because it is the home version they probably do not.

      Care and washing

      Treat any mark early with cold water. Heat sets stains into polyester permanently.

      Shipping, sizing and returns

      Free shipping on orders over $57 · Flat $7 shipping below $57 · Dispatched in 7-15 business days · 30-day free returns

      Sizes run true in a relaxed supporter cut — measure a jersey you already own flat across the chest and match it to our size guide. Between sizes and want it closer? Take the smaller one.

      Common questions
      How does this compare to the version sold at the club shop?

      Honestly: construction and fit. You get Heat-sealed crest & screen-applied detailing and Adult S, M, L, XL, 2XL (true to US/EU standard) instead of twill and player-issue proportions. Visually at a distance, they are very close.

      Should I order my usual size or size up?

      Your usual size works — a relaxed regular fit built for all-day wear already includes wearing ease. Only size up for heavy layering.

      How long will this jersey realistically last?

      Several seasons of regular wear with cold washes and no tumble drying. Most failures come from heat exposure rather than wear.

      From our team to yours

      We have all had that delivery that arrives and immediately disappoints. So we pack these the way we would want to receive one.

      Looking for other teams? Explore our full NHL Jerseys collection.

      Complete the kit: browse all Utah Mammoth gear.

      Every order is tracked, every return is free, and every jersey is checked before it leaves the warehouse.

      Last updated: September 2026

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