High altitude apparel

sizing chart

Select a sizing chart below.

Mens' / Unisex Tees
S M LG XL 2XL 3XL
Chest 18 20 22 24 26 28
Length from shoulder 28 29 30 31 32 33
Ladies' Tees
XS S M LG XL 2XL
Waist (inches) 23-24 25-26 27-28 29-31 32-34.5 35-38
Hips(inches) 33-34.5 35-36.5 37-38.5 39-41.5 42-45 46-48.5
Youth Tees
XS S M LG XL
Youth 2-4 6-8 10-12 14-16 18-20
Chest 20-22 22-26 26-30 30-34 34-36
Weight (lbs) 36-42 42-55 55-73 73-100 100-126
Mens' tank tops
S M LG XL 2XL
Length from shoulder 28.5 29.5 30.5 31.5 32.5
Body width 18.5 30 21.5 23.5 25.5
Ladies' tank tops
XS S M LG XL 2XL
Length from shoulder 27 27.5 28 28.5 29 29.5
Bust 1″ below armhole 14 15 16 17 18 19
Hoodies
S M LG XL 2XL
Width 20 22 24 26 28
Length 27 28 29 30 31

About our shirts

- Made from the highest quality products

All of our t-shirts are ultra-soft, high quality garments - you can feel the difference.

- Made in America

All of our shirts are designed and printed in the good old US of A.

- Original, unique designs

All of our shirts are designed by High Altitude Apparel here in Colorado. We take great pride in creating shirts that are unique, expressive, and fun to wear! We hope you enjoy wearing our shirts as much as we do! 

Colorado shirts

What our customers are saying

Just wanted to say thank you for the shirt I received. It's a great design and my son loves it! Your customer service is top notch. We'll definitely be repeat customers!

Russell J

High Altitude has some of the most unique designs I've ever seen. Their Colorado shirts are very creative! Great customer service as well.

Patricia K

The Colorado Millennium Falcon shirt is so awesome. I get compliments all the time when I wear it. I love you guys are going with your style!

Aaron C

Just put my Colorado Millennium Falcon sticker on our family car - we love it!

Jon F

Shop our Cyber Weekend SaleGet 20% your order with coupon code CYBER

Discount is applied on top of our existing sales!

Valid thru Monday, 11/30.

Not valid with any other coupons.

Shop our HUGE Black Friday SaleGet 15% off and free shipping with code BLACK
Discount is applied on top of our existing sales!
Valid only today, Friday 11/27.
Not valid with any other coupons.
Take this deal home for the holidays!Get FREE shipping and enjoy our holiday sale prices!
Use code WINTER2020

We’re spreading some holiday cheer for an extended period this year, because, well... 2020.

This offer is valid on all orders over $35.

This offer is valid now through January 31, 2021.