★ About Sigma Sports 21 · Since 2019We Don’t Just Make Uniforms.
We Don’t Just Make Uniforms.
We Build Team Identity.
Sigma Sports 21 is a New York–based custom team apparel brand backed by our own manufacturing factory.
Since 2019 we’ve been dressing the programs that keep American sports alive — youth leagues, high schools, clubs, academies, camps and the retailers who serve them. Every jersey, hoodie, jacket and bag we make carries one promise: when your team walks on the field, they look like they belong there.
Why we do it
Every Team Deserves to Look Like a Champion.
Not just the teams with the biggest budgets.
Too many programs overpay middlemen, wait weeks for generic catalog gear and get treated like a small order. We started Sigma Sports 21 to change that. A 10-player youth team deserves the same quality, attention and pride as a pro franchise — at a price that leaves room in the budget for what really matters: the kids, the coaches and the game.
The uniform is the first thing a team earns together. It builds pride, discipline and belonging. That’s why we do this — and why we take every order personally.
What we do
Everything Your Program Wears — Under One Roof.
Fully custom, in your colors, with your logo, names and numbers.
Game Uniforms
- Football & 7v7
- Baseball & softball
- Basketball
- Cheerleading
Performance & Training
- Compression & arm sleeves
- Practice jerseys & shorts
- Women’s leggings & tops
Sideline & Spirit Wear
- Coaches polos & staff gear
- Warm-ups & tracksuits
- Hoodies & bucket hats
Jackets & Bags
- Varsity letterman jackets
- Team backpacks
- Duffle sports bags
Online Team Stores
Parents and players order and pay on their own — no collecting cash, no spreadsheets. New stores open in 2–3 working days.
Private Label
Retailers and brands can put their own label on our product — same factory quality, your name on it.
How we do it
From Idea to Game Day — Fast, Simple, Done Right.
01
Tell Us Your Vision
Call, text, email or send a quote request. Share your logo, colors and quantities — or just an idea.
02
Free Mockup in 24 Hours
Our designers send a free design mockup and clear pricing. Revise until it’s exactly right.
03
Made in Our Own Factory
Sublimation, embroidery, tackle twill and cut-and-sew under one roof — every piece quality-checked before it ships.
04
Delivered to Your Door
Shipped to all 50 states with tracking, packed and labeled so your team is ready to play.
Why they choose us
Why Schools, Clubs & Retailers Choose Sigma Sports 21
Schools & Athletic Directors
One Partner for Every Sport
From football to cheer, one supplier keeps your whole program in the same colors and the same quality. Reorders match season after season — no mismatched shades, no hunting for a new vendor.
Clubs, Leagues & Academies
More Gear, Less Budget
Factory-direct pricing stretches every dollar, and online team stores let parents order and pay themselves. You focus on coaching — we handle the gear.
Retailers & Resellers
A Factory Behind Your Brand
Consistent quality at scale, private-label options and competitive wholesale pricing for repeat programs — with a reliable production partner who answers the phone.
No Middleman
We make it ourselves, so you get better quality at factory-direct prices.
Fully Custom
Any color, any design, your logo, names and numbers — no catalog limits.
Built to Last
Pro-grade fabrics, reinforced stitching and colors that stay bright wash after wash.
Real People, Real Answers
A US phone line and a reply within 24 hours. No bots, no runaround.
Speed You Can Count On
Free mockups in 24 hours and a production team built for tight season deadlines.
All Payments Welcome
Credit & debit cards, PayPal and Zelle — pay the way that works for your program.
Your Team. Your Colors. Our Promise.
Tell us what you need — we’ll send a free mockup and pricing within 24 hours.
(346) 441-7876
Call or Text
sales@sigmasports21.com
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All 50 States
We Ship Nationwide
Within 24 Hours
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© 2026 Sigma Sports 21 LLC · 454 Klondike Avenue, Staten Island, NY 10314 (visits by appointment only) · (346) 441-7876 · All Rights Reserved.
★ ALL PAYMENT OPTIONS WELCOME
Credit & Debit Cards·
PayPal·
Zelle ✓
Prefer Zelle? We accept it — call/text (346) 441-7876 or email us for details.