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2024-2025 Athletic Bilbao Away Shirt (Williams JR. 11)

Rabat $25.90 USD
$39.90 USD
$65.80 USD

Size Guide

FANGEAR PRO 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, NCAA, and Soccer.

Not sure which size to pick?

Order the size you think fits best, then simply email your height, weight, and chest measurements to fangearprohelp@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 bulky 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 level with the floor and do not puff your chest out.

2. Waist

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

3. Hips

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

4. Body Length

Measure from the highest point of your shoulder (beside the collar) straight down to where you prefer the bottom hem to rest.

5. Sleeve Length

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

6. Inseam (Pants)

Measure from the crotch point straight down to your ankle bone along the inner leg seam to find your ideal pant length.

2. FIT BY LEAGUE (OVERVIEW)

Each major sports league designs jerseys with its own distinct traditional silhouette.

League Cut Style How It Should Feel & Sizing Advice
Soccer Athletic / Supporter Slim Close to the body. If you are between sizes or prefer a loose Blokecore streetwear look over t-shirts, size up one.
NBA Basketball Standard / Elongated Relaxed through chest and torso with an extended back hem. True to size; size up if layering over hoodies.
NFL Football Roomy / Boxy Tailgate Cut Classic oversized game-day cut with broader shoulders. Plenty of room for hoodies. Order true size or size down for a tailored look.
MLB Baseball Full / Button-Front Relaxed traditional baseball profile with curved droptail hem and extra chest room. True to size; fits easily over base layers.
NHL Hockey Very Loose / Generous The roomiest cut of all leagues. Wide across the torso with wide sleeves. Never size up; order your normal t-shirt size.

3. QUICK SIZE FINDER BY CHEST MEASUREMENT

Locate your chest measurement to cross-reference 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 Game 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 standardized youth chart in Section 9 (S / M / L / XL by age, chest, and height).

6. MLB BASEBALL JERSEYS

Traditional full button-front styling. Relaxed profile through chest and shoulders with curved droptail hem.

Men's MLB Button-Front 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 authentic on-ice 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 — consider sizing up one for a looser streetwear drape or for layering.

Men's / Unisex Soccer Supporter Kits
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 Kits (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, height, and age band.

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 waistline.

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 length.

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 SIZE CONVERSIONS

Shopping from outside North America? Convert your regional sizing to standard US 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 your height, weight, and chest measurements via email to fangearprohelp@outlook.com. Our specialists will check your physical stock measurements before dispatch and calibrate your size if needed.
I am between two sizes — which should I choose?
When in doubt, always size up. A slightly roomier jersey provides better airflow, supreme matchday comfort, and allows effortless layering over t-shirts or hoodies. A jersey that is too tight rarely gets worn.
Do the jerseys shrink after washing?
No. Our jerseys are crafted from premium technical polyester mesh that is dimensionally stable and pre-shrunk. As long as you wash in cold water (30°C / 85°F) and air dry naturally, shrinkage is under 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 cold-weather layering. Your normal t-shirt size will easily accommodate a standard hoodie. If you wear an extra-heavyweight fleece hoodie, consider stepping up one size.

FANGEAR PRO FIT & DELIVERY GUARANTEE

All orders qualify for our 30-day free returns and exchanges guarantee with zero restocking fees. Free worldwide insured shipping applies to all orders $57.00 and above ($7.00 flat fee under $57.00). If your kit doesn't fit the way you prefer, our team will exchange it hassle-free.

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Antal

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QUICK ANSWER

A supporter-grade Athletic Bilbao shirt — the same design language you see on the field, in a friendlier fabric and a more forgiving fit. Athletic Bilbao fans wear their colours with conviction, and this shirt is built for that. Free insured shipping on orders of $57 or more (a flat $7 delivery fee applies below $57). Backed by a 30-day hassle-free return window with zero restocking fees and free size swaps.

✓ Checked before dispatch
✓ Tracked global delivery
✓ Free shipping on $57+
✓ Plain, safe gift packaging
✓ Secure encrypted payment
✓ 30-day returns, free size swaps

Product Overview

Supporters follow the season from the first fixture to the last, and the shirt comes with them. The knit here is chosen for durability, with detailing finished to survive repeated wear and washing.

As a supporter replica, the cut is relaxed rather than athletic, so it layers cleanly over a tee and never clings. Sizing follows standard US/EU measurements, so most buyers can order their usual size.

  • Flatlock stitching in high-friction areas cuts down on chafing under a backpack or in the stands.
  • Colour-fast dye keeps its depth through repeated cycles instead of fading early.
  • Anti-pilling treatment keeps the surface looking new rather than fuzzy.
  • Micro-perforated mesh panels move air across the torso, so heat has somewhere to go.
  • A lightweight, breathable body that will not feel heavy in summer heat.

Edition & Printing Details

Supplied as shown, with the official club crest and league detailing. This listing does not include custom name-and-number printing — the shirt arrives exactly as pictured.

Frequently Asked Questions

How does this jersey fit? +
This is a supporter replica with a relaxed, regular cut rather than an athletic one, so it sits comfortably over a tee. If you are between sizes or plan to layer a hoodie underneath, size up one.
What is the best way to wash and care for this shirt? +
A cold, inside-out wash on a gentle cycle keeps both the knit and the detailing in shape. Air dry, and never iron directly over the graphics.
What are the shipping and return terms? +
Standard shipping is tracked and insured and normally lands within 7-15 business days. Free shipping applies to orders of $57 or more (a flat $7 fee below that). You have 30 days for a return or a free size swap, with no restocking fees.
What if the jersey does not fit? +
Size swaps are free within 30 days of delivery, and we never charge restocking fees. If the fit is not right, contact support and we will arrange an exchange for the correct size.

CHOOSE YOUR KIT STYLE

HOME KITS
Iconic primary colors built for stadium match days and true fan loyalty.
Shop Home
AWAY KITS
Crisp road colorways tailored for travel fixtures and effortless street styling.
Shop Away
THIRD
Bold limited concepts, tournament kits, and modern high-impact colorways.
Shop Third
RETRO CLASSICS
Timeless throwback silhouettes honoring historic championship eras and legends.
Shop Retro
PRO-GRADE LIMITED
Elevated game-day cuts crafted with durable stitched twill for superfans.
Explore Limited
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CUSTOMIZE YOUR OWN JERSEY WITH ANY NAME & NUMBER

Personalization & Craftsmanship:
Pro-Stitched Twill Lettering, Multi-Layer Numbers, Breathable Moisture-Wicking Fabric, Tailored Athletic Fit, Reinforced Collar & Hem Stitching.
Personalization & Craftsmanship:
Pro-Stitched Twill Lettering, Multi-Layer Numbers, Breathable Moisture-Wicking Fabric, Tailored Athletic Fit, Reinforced Collar & Hem Stitching.
Customize Yours

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