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I Don't Know Shirt

¥3,697 ¥3,215 JPY (plus tax)
Free shipping when you spend ¥12,023+ for everyone. Promotion auto-applied on checkout.

I Don't Know Shirt – Unisex Tee

The I Don't Know Shirt keeps things wonderfully simple with a short phrase that can say almost everything without explaining anything. The straightforward “I Don’t Know” message gives the tee a dry, deadpan personality that works perfectly for anyone who enjoys sarcasm, casual humor, and minimalist statement fashion.

Select size

More details

  • Solid colors are 100% ring-spun cotton
  • Sport Grey is 90% ring-spun cotton, 10% polyester
  • Heather colors are 65% polyester, 35% cotton
  • Lightweight fabric (4.2 oz)
  • Relaxed fit
  • Unisex sizing

Quality Guarantee & Returns

  • Quality is guaranteed. If there is a print error or visible quality issue, we'll replace or refund it.
  • Because the products are made to order, we do not accept general returns or sizing-related returns.

I Don't Know Shirt Size Guide

Size guide preview
Size label Length Width Sleeve length
S
28
18
16.75
M
29
20
17.88
L
30
22
19.13
XL
31
24
20.38
2XL
32
26
21.63
3XL
33
28
22.75

Measurements are provided by suppliers. Product measurements may vary by up to 2" (5 cm).

Pro tip! Measure one of your products at home and compare with the measurements you see in this guide.

 


A Length

Place the end of the tape beside the collar at the top of the tee (Highest Point Shoulder). Pull the tape measure to the bottom of the shirt.

B Width

Place the end of the tape at the seam under the sleeve and pull the tape measure across the shirt to the seam under the opposite sleeve.

C Sleeve length

Place the end of the tape at the center back of the collar, then pull the tape measure along the top seam of the sleeve. When you get to the shoulder hold the tape in place at the shoulder and continue to pull down the sleeve until you reach the hem of the sleeve.

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