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We make one of these for the kid every year. These make great birthday presents for any teen who loves math.  Adult unisex size.

Econscious EC1000 unisex t-shirts for men and women feature a 100% Certified-Organic, ring-spun cotton fabric. Also equipped with an organic cotton/ 1x1 neck rib, and a shoulder seam that is clean-finished with self-fabric tape, these printable tees deliver in both comfort and style.

.: 100% certified organic, ring-spun cotton

.: Medium fabric (5.5 oz/yd² (186 g/m²))

.: Regular fit

.: Tear-away label



  S M L XL 2XL
Width, in 18.50 20.50 22.50 24.50 26.50
Length, in      27.00      28.00      29.00      30.00      31.00     


14th Birthday Square Root of 196 Organic Unisex Classic T-Shirt

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