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Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt
Custom Being Awesome T-Shirt - Rainbow Edition Birthday T-Shirt

Custom Being Awesome T-Shirt - Rainbow Edition

$24.99 $0.00

Fulfilled from our facility in 1-3 business days

See Size Chart

Mix And Match T-Shirts For A Discount!

Quantity Discount Discount Code
3+ 15% SAVEON3
5+ 25% SAVEON5
7+ 35% SAVEON7

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!

Customer Reviews

Based on 16 reviews
94%
(15)
6%
(1)
0%
(0)
0%
(0)
0%
(0)
B
B.G.
Great Birthday Gift

My granddaughter loved her 11 year old shirt. Me grandson will get his T-shirt in December. I’m sure he will be happy about his 10 year old shirt, also.
I will order a 6 year old T-shirt in February for the current 5 year old.
As grandma, I’m very pleased with giving my grandchildren your T-shirt

Betty Greene

K
K.H.
Love My Shirt very please with the size & the quality of the material

I'm very happy with my Shirt. My Birthday is 10/25. This is one of a kind looking forward to wearing my shirt. Definitely will recommend Not So Basic. I'm one Happy Customer!!!! Thank you so much❤

D
D.H.

I bought this 10 year old t-shirt for a birthday gift for my daughter's friend. Also bought one for my daughter she lives it

J
J.V.
Rainbow t shirt

I gave the 6 year old shirt to my grandson for his birthday. He loved it! He loves rainbows, he received many compliments when he wore it to school.

R
R.A.
Love these shirts! 🥰

I purchased for future birthday! I’m trying to make sure that each of my six grandchildren have a shirt for their birthdays! I love these shirts and so do my grandkids! I’ve already purchased several!

123

Anvil 990B Youth Lightweight Fashion T-Shirt

Please check measurements to ensure proper fit. Adult sizes available upon request.

Sizes
Weight
Height
Waist
Chest
XS
2-4
45-65 lbs
43"-49"
18"-22"
23"-26"
S
6-8
60-80 lbs
49"-54"
22"-27"
26"-29"
M
10-12
75-102 lbs
54"-61"
27"-28"
29"-31"
L
14-16
102-122 lbs
61"-65"
28"-30"
31"-34"
XL
18-20
122-140 lbs
65"-67"
30"-32"
34"-36"

Bella + Canvas 3001T Toddler Short Sleeve Tee

Please check measurements to ensure proper fit. Larger youth sizes available upon request.

Weight
Height
2T
30-33 lbs
32"-35"
3T
33-36 lbs
35"-38"
4T
36-40 lbs
38"-40"
5T
40-45 lbs
40"-43"
6T
45-50 lbs
43"-49"

Anvil 980 Lightweight Fashion Short Sleeve T-Shirt

Please check measurements to ensure proper fit.

Length
Width
S
27"
18"
M
28"
20"
L
29"
22"
XL
30"
24"
2XL
32"
26"
3XL
33"
28"

Bella + Canvas 3001T Toddler Short Sleeve Tee

Please check measurements to ensure proper fit. Larger youth sizes available upon request.

Weight
Height
2T
30-33 lbs
32"-35"
3T
33-36 lbs
35"-38"
4T
36-40 lbs
38"-40"
5T
40-45 lbs
40"-43"
6T
45-50 lbs
43"-49"

Anvil 990B Youth Lightweight Fashion T-Shirt

Please check measurements to ensure proper fit. Adult sizes available upon request.

Sizes
Weight
Height
Waist
Chest
XS
2-4
45-65 lbs
43"-49"
18"-22"
23"-26"
S
6-8
60-80 lbs
49"-54"
22"-27"
26"-29"
M
10-12
75-102 lbs
54"-61"
27"-28"
29"-31"
L
14-16
102-122 lbs
61"-65"
28"-30"
31"-34"
XL
18-20
122-140 lbs
65"-67"
30"-32"
34"-36"

Anvil 990B Youth Lightweight Fashion T-Shirt

Please check measurements to ensure proper fit. Adult sizes available upon request.

Sizes
Weight
Height
Waist
Chest
XS
2-4
45-65 lbs
43"-49"
18"-22"
23"-26"
S
6-8
60-80 lbs
49"-54"
22"-27"
26"-29"
M
10-12
75-102 lbs
54"-61"
27"-28"
29"-31"
L
14-16
102-122 lbs
61"-65"
28"-30"
31"-34"
XL
18-20
122-140 lbs
65"-67"
30"-32"
34"-36"

Anvil 980 Lightweight Fashion Short Sleeve T-Shirt

Please check measurements to ensure proper fit.

Length
Width
S
27"
18"
M
28"
20"
L
29"
22"
XL
30"
24"
2XL
32"
26"
3XL
33"
28"

Bella + Canvas 3001T Toddler Short Sleeve Tee

Please check measurements to ensure proper fit. Larger youth sizes available upon request.

Weight
Height
2T
30-33 lbs
32"-35"
3T
33-36 lbs
35"-38"
4T
36-40 lbs
38"-40"
5T
40-45 lbs
40"-43"
6T
45-50 lbs
43"-49"

Anvil 990B Youth Lightweight Fashion T-Shirt

Please check measurements to ensure proper fit. Adult sizes available upon request.

Sizes
Weight
Height
Waist
Chest
XS
2-4
45-65 lbs
43"-49"
18"-22"
23"-26"
S
6-8
60-80 lbs
49"-54"
22"-27"
26"-29"
M
10-12
75-102 lbs
54"-61"
27"-28"
29"-31"
L
14-16
102-122 lbs
61"-65"
28"-30"
31"-34"
XL
18-20
122-140 lbs
65"-67"
30"-32"
34"-36"

Anvil 980 Lightweight Fashion Short Sleeve T-Shirt

Please check measurements to ensure proper fit.

Length
Width
S
27"
18"
M
28"
20"
L
29"
22"
XL
30"
24"
2XL
32"
26"
3XL
33"
28"