3 FIT THEORY - No Shrink Icon
Our Shirts Don't Shrink
United States “Sizing”
Chest Measure Icon
Know Your Chest Size?

We kinda hate size charts,

But without knowing your body type and preferences, it's the best starting point.
Chest Size Chart
or
Email Symbol Icon
Or, email us.
hello@3fittheory.com

We're happy to help.

(We reply within 1 business day, if not sooner)
3 FIT Theory Logo
Are you ready?
Shirt “Sizes” are dumb.
Let's Get You Fitted.
3 FIT Theory - Package Icon
Free Expedited Shipping Icon
  Free Expedited Shipping
Arrives 2 business days, including Saturdays.
Down Icon
3 FIT Theory - 7 Day Try Out - Calendar Icon
  7 Day Try Out
Starts only on delivery.
Down Icon
3 FIT THEORY - No Shrink Icon
  Our Shirts Don't Shrink
Washer & Dryer safe.
3 FIT THEORY LOGO
Your Fitting
What “Size” Shirt Do You Typically Wear?
We use this as the starting point to find your fit.
Note: Our Shirts Don't Shrink.
Between 3XL / 4XL
4XL
Between 4XL / 5XL
5XL
Length?
Choose “Standard” unless you're specifically looking for more or less length.
Next, you'll customize your fitting.
Color, Length, and More!
Find Your Fit
3 FIT Theory - Package Icon
The Perfect Shirt Awaits
Get Fitted Now
Includes 1 Shirt Free
49
Regular Price
29
Limited-Time Only
Get Fitted Now
1-time fee. Not a subscription.
3 FIT Theory - Shirt Icon 3 FIT Theory - Checkmark Icon
Already Know Your Fit?
Buy Shirts
Login Now ▸
Made In America
Made In USA
Santa Fe Springs, California