This product is made on demand. We cannot provide a preview of your selected age.

Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt Black / 2T
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt Navy / 2T
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt Royal Blue / 2T
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt Purple / 2T
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt White / 2T
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt Caribbean Blue / Youth XS

Custom Years of Being Awesome - Rainbow Edition

Regular price $22.99 $0.00

Ships out in 3 business days

  • A clever and unique birthday present with a 🌈 rainbow twist!

    The original countdown t-shirt, but in rainbow colors! This one of a kind t-shirt is mathematician approved, with all leap years accounted for. Serving any and all ages!


    If you have a loved one that's celebrating a birthday and totally awesome, you're going to love giving them this fun shirt to wear on their special day! They will be sure to receive many compliments.

    This product is custom and not created until the order is processed. Please include your desired age before adding to cart and our mathematicians will get to work on your custom calculated t-shirt!

  • Toddler 2T 3T 4T 5T 6T
    Weight (lbs) 30-33 33-36 36-40 40-45 45-50
    Height 32-35" 35-38" 38-40" 40-43" 43-49"
    Youth XS S M L XL
    Sizes 2-4 6-8 10-12 14-16 18-20
    Weight (lbs) 45-65 60-80 75-102 102-122 122-140
    Height 43-49" 49-54" 54-61" 61-65" 65-67"
    Adult S M L XL 2XL 3XL
    Length 27" 28" 29" 30" 32" 33"
    Width 18" 20" 22" 24" 26" 28"

Buy More. Pay Less.

Mix And Match T-Shirts For A Discount!

*All Discounts Applied Automatically
Quantity Discount
2 Free Shipping
3+ Free Shipping + 15% Off

Customer Reviews

Based on 132 reviews
Russell Lewis

Haven't given it to my BFF of 55 years yet, his birthday is in May.
I'm sure he'll love it. Everyone I've shown it to so far has loved it.
I will probably have to get one for myself when I turn 70 in December.

Amazing as always

I’ve bought this t shirt in some color or form for now four years! Always a hit and fun to wear to school on their birthday and for family parties! Than she wears it all year round for a bed shirt and the quality is so good even after that I can pack it away for my younger kiddo! Highly recommend this product to make Their birthday extra special!!!!!

Angela Desoto
Beyond pleased

These two tshirts were gifts that were needed in a short timeframe and when they came in such a short period we were shocked. The quality of each shirt sent exceeded our expectations. We will definitely be ordering from this company again.

Karen S
Third one purchased

I've bought one for each grandchild's birthday and been very happy with each and they loved them. Picture is from first one purchased.

Jessica Williams
10th Birthday Shirt in Black

Came across this on ig, saved the post was hesitant to buy it for fear it was not legit. I am so glad I gave it a shot ! Great quality, colors were vibrant and fit was spot on. My 10 year old loved it and wore it on his actual birthday. Great conversation piece. Would absolutely purchase again.
P.S. I ordered an XL for my 10 year old son who wears a standard xl or 10/12 in boys and it fit great.

Birthday Gift

5 year old grandson thrilled with his "5" shirt. Big sister wants one for her birthday too

Fun gift for all ages

Birthday Shirt Appreciated by 10 year old and 71 year old alike. Everyone present wanted one for their birthday. A great gift for the person that’s hard to buy for.

M. Swanson
Awesome "T" Shirt

Very pleased with the quality of this shirt. Eager to give this awesome shirt to an awesome friend on her awesome 70th birthday!!!

Cute unique birthday gift

I bought one for my nephew and one for my niece for their birthdays this month. They are nice looking and soft shirts with good printing. I know they will both love them