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Patrick Mahomes Kansas City Chiefs Newborn Romper Game Jersey - Red

0-3M-0-3-MO-XS5332
From 4 interest-free payments of $39.78 with Klarna
From 4 interest-free payments of $39.78 with Klarna
$42.90 USD
$59.90 USD
Shipping fees will be calculated at checkout.
Size

Size Guide

 

Sports Fan Gear Size Guide

Standard Measurement Matrix

Find Your Perfect Jersey Fit

Get the ideal fit for every sports fan in your family. All parameters for our NFL, NBA, MLB, NHL, and 2026 World Cup soccer jerseys are detailed in both metric (cm) and imperial (in) standards below.

Baby (0-24M) Kids (2-12Y) Youth (8-16Y) Women's Tops Men's Tops Shorts

Baby Size Guide (0-24 Months)

Designed for newborns to toddlers.

Size Label Age Height (cm) Height (in) Weight (kg) Weight (lbs)
Newborn 0 - 1 month 50 - 56 cm 19.5 - 22" 3 - 5 kg 7 - 11 lbs
0 - 3M 0 - 3 months 56 - 62 cm 22 - 24.5" 5 - 7 kg 11 - 15.5 lbs
3 - 6M 3 - 6 months 62 - 68 cm 24.5 - 27" 7 - 8.5 kg 15.5 - 19 lbs
6 - 9M 6 - 9 months 68 - 74 cm 27 - 29" 8.5 - 9.5 kg 19 - 21 lbs
9 - 12M 9 - 12 months 74 - 80 cm 29 - 31.5" 9.5 - 11 kg 21 - 24 lbs
12 - 18M 12 - 18 months 80 - 86 cm 31.5 - 34" 11 - 12.5 kg 24 - 27.5 lbs
18 - 24M 18 - 24 months 86 - 92 cm 34 - 36" 12.5 - 14 kg 27.5 - 31 lbs

Kids Size Guide (2-12 Years)

Size Label Age Height (cm) Height (in) Chest (cm) Chest (in) Waist (cm) Waist (in)
2T 2 years 86 - 92 cm 34 - 36" 53 cm 21" 51 cm 20"
3T 3 years 92 - 98 cm 36 - 38.5" 55 cm 21.5" 52 cm 20.5"
4T 4 years 98 - 104 cm 38.5 - 41" 57 cm 22.5" 53 cm 21"
5 5 years 104 - 110 cm 41 - 43.5" 59 cm 23" 54 cm 21.5"
6 6 years 110 - 116 cm 43.5 - 45.5" 61 cm 24" 56 cm 22"
7 7 years 116 - 122 cm 45.5 - 48" 63 cm 25" 57 cm 22.5"
8 8 years 122 - 128 cm 48 - 50.5" 66 cm 26" 59 cm 23"
9 - 10 9 - 10 years 128 - 140 cm 50.5 - 55" 69 - 72 cm 27 - 28.5" 62 - 64 cm 24.5 - 25"
11 - 12 11 - 12 years 140 - 152 cm 55 - 60" 76 - 79 cm 30 - 31" 66 - 69 cm 26 - 27"

Youth Size Guide (8-16 Years)

Size Label Age Scale US Size Height (cm) Height (in) Chest (cm) Chest (in) Waist (cm) Waist (in)
XS 7 - 8 Yrs 7 122 - 128 cm 48 - 50" 64 - 67 cm 25 - 26.5" 57 - 59 cm 22.5 - 23"
S 8 - 10 Yrs 8 - 10 128 - 140 cm 50 - 55" 69 - 72 cm 27 - 28.5" 60 - 64 cm 23.5 - 25"
M 10 - 12 Yrs 10 - 12 140 - 152 cm 55 - 60" 74 - 77 cm 29 - 30.5" 65 - 69 cm 25.5 - 27"
L 12 - 14 Yrs 12 - 14 152 - 164 cm 60 - 64.5" 79 - 84 cm 31 - 33" 70 - 75 cm 27.5 - 29.5"
XL 14 - 16 Yrs 14 - 16 164 - 172 cm 64.5 - 68" 86 - 91 cm 34 - 36" 76 - 81 cm 30 - 32"

Women's Shirts & Tops

Size Label US Size UK Size EU Size Bust (cm) Bust (in) Waist (cm) Waist (in)
XS 0 - 2 4 - 6 32 - 34 81 - 84 cm 32 - 33" 61 - 64 cm 24 - 25"
S 4 - 6 8 - 10 36 - 38 86 - 89 cm 34 - 35" 66 - 69 cm 26 - 27"
M 8 - 10 12 - 14 40 - 42 91 - 94 cm 36 - 37" 71 - 74 cm 28 - 29"
L 12 - 14 16 - 18 44 - 46 99 - 102 cm 39 - 40" 79 - 82 cm 31 - 32"
XL 16 - 18 20 - 22 48 - 50 107 - 112 cm 42 - 44" 86 - 91 cm 34 - 36"
XXL 20 - 22 24 - 26 52 - 54 117 - 122 cm 46 - 48" 96 - 102 cm 38 - 40"

Men's Tops & Sports Jerseys

Size Label US Size UK Size EU Size Chest (cm) Chest (in) Waist (cm) Waist (in)
XS 34 34 44 86 - 89 cm 34 - 35" 71 - 74 cm 28 - 29"
S 36 36 46 91 - 94 cm 36 - 37" 76 - 79 cm 30 - 31"
M 38 - 40 38 - 40 48 - 50 96 - 102 cm 38 - 40" 81 - 86 cm 32 - 34"
L 42 42 52 107 - 112 cm 42 - 44" 89 - 94 cm 35 - 37"
XL 44 44 54 117 - 122 cm 46 - 48" 96 - 102 cm 38 - 40"
XXL 46 - 48 46 - 48 56 - 58 127 - 132 cm 50 - 52" 104 - 109 cm 41 - 43"
3XL 50 - 52 50 - 52 60 - 62 137 - 142 cm 54 - 56" 112 - 118 cm 44 - 46"

Shorts Size Guide

Men's Shorts

Size Waist (cm) Waist (in)
XS 71 - 74 cm 28 - 29"
S 76 - 81 cm 30 - 32"
M 84 - 89 cm 33 - 35"
L 91 - 97 cm 36 - 38"
XL 99 - 104 cm 39 - 41"
XXL 107 - 112 cm 42 - 44"

Women's Shorts

Size US Size Waist (cm) Waist (in)
XS 0 - 2 61 - 64 cm 24 - 25"
S 4 - 6 66 - 69 cm 26 - 27"
M 8 - 10 71 - 74 cm 28 - 29"
L 12 - 14 79 - 82 cm 31 - 32"
XL 16 - 18 86 - 91 cm 34 - 36"
Measurement Advice & Fitting Guidance:

Size charts serve as general fitting standards for SportsFanFit merchandise. Actual fits may slightly vary across NFL, NBA, MLB, and 2026 World Cup soccer jersey versions. If your measurements fall between two sizes, we recommend selecting the larger size for optimal athletic comfort. Need help? Contact us at jerseyhelp@hotmail.com.

 
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Patrick Mahomes Kansas City Chiefs Newborn Romper Game Jersey - Red

Win or lose, loyalty doesn't take a week off. This Kansas City Chiefs matchday jersey is how you wear that loyalty where everyone can see it.

The Story

Designed to echo the on-field look without the on-field price tag, it delivers the pro-style aesthetic in a relaxed everyday fit.

01
Comfort That Lasts All MatchdayA breathable knit that balances stretch and structure, moving with you instead of against you.
02
A Fit for Real FansSized with everyday wear in mind — generous through the torso without looking baggy.
03
This Season’s LookThe this season update brings the newest crest and design details of the current campaign.
04
Built to Hold UpClean team markings, tidy stitching at the seams, and a collar that holds its shape wash after wash.
Design notes: Start their fandom from day one with this Patrick Mahomes Kansas City Chiefs Romper Jersey from . Practical four-snap bottom and two-snap shoulder closures make for quick and easy changes, keeping your little one comfortable through all four quarters.

Wear It

From the tailgate to the grocery store, it quietly announces your allegiance without saying a word. Pack it for away trips — nothing beats spotting a fellow Kansas City Chiefs fan in a foreign city.

Whether it's Father's Day, a graduation, or just a 'thanks for being a fan' — this one lands.

The Details

  • Style: fan-version game-day jersey with the matchday look of Kansas City Chiefs.
  • Fit: sizing; check the size chart for exact chest measurements.

True to size for most fans; if you prefer a looser, game-day layering fit, consider going one size up.

Care & Questions

What you see is what you get — clear photos, honest sizing, and a fan version described exactly as it is. Ordering is simple and secure. If anything needs a second look, email us at jerseyhelp@hotmail.com and we'll sort it out.

A little care goes a long way — cold wash, air dry, and this jersey stays game-day ready for years.

Need help? Email jerseyhelp@hotmail.com

What's the best size for a layered NFL look?

NFL fan jerseys follow standard US sizing; most fans go one size up when they plan to layer over a hoodie.

Is payment secure on this site?

Yes — checkout runs through secure payment processing, and your details are handled with standard industry protection.

Can I buy multiple sizes to compare?

You can place separate orders, but we recommend checking the size chart first — most fans land it right the first time.

Your spot in the stands is ready — grab this Kansas City Chiefs jersey before your size is gone.

Patrick Mahomes Kansas City Chiefs Newborn Romper Game Jersey - Red

Win or lose, loyalty doesn't take a week off. This Kansas City Chiefs matchday jersey is how you wear that loyalty where everyone can see it.

The Story

Designed to echo the on-field look without the on-field price tag, it delivers the pro-style aesthetic in a relaxed everyday fit.

01
Comfort That Lasts All MatchdayA breathable knit that balances stretch and structure, moving with you instead of against you.
02
A Fit for Real FansSized with everyday wear in mind — generous through the torso without looking baggy.
03
This Season’s LookThe this season update brings the newest crest and design details of the current campaign.
04
Built to Hold UpClean team markings, tidy stitching at the seams, and a collar that holds its shape wash after wash.
Design notes: Start their fandom from day one with this Patrick Mahomes Kansas City Chiefs Romper Jersey from . Practical four-snap bottom and two-snap shoulder closures make for quick and easy changes, keeping your little one comfortable through all four quarters.

Wear It

From the tailgate to the grocery store, it quietly announces your allegiance without saying a word. Pack it for away trips — nothing beats spotting a fellow Kansas City Chiefs fan in a foreign city.

Whether it's Father's Day, a graduation, or just a 'thanks for being a fan' — this one lands.

The Details

  • Style: fan-version game-day jersey with the matchday look of Kansas City Chiefs.
  • Fit: sizing; check the size chart for exact chest measurements.

True to size for most fans; if you prefer a looser, game-day layering fit, consider going one size up.

Care & Questions

What you see is what you get — clear photos, honest sizing, and a fan version described exactly as it is. Ordering is simple and secure. If anything needs a second look, email us at jerseyhelp@hotmail.com and we'll sort it out.

A little care goes a long way — cold wash, air dry, and this jersey stays game-day ready for years.

Need help? Email jerseyhelp@hotmail.com

What's the best size for a layered NFL look?

NFL fan jerseys follow standard US sizing; most fans go one size up when they plan to layer over a hoodie.

Is payment secure on this site?

Yes — checkout runs through secure payment processing, and your details are handled with standard industry protection.

Can I buy multiple sizes to compare?

You can place separate orders, but we recommend checking the size chart first — most fans land it right the first time.

Your spot in the stands is ready — grab this Kansas City Chiefs jersey before your size is gone.

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