ULTRABASIC Men's Math T-Shirt Just Turned 18 I Know Everything - Funny Birthday Tee Shirt for Mathematician

COMFORTABLE CASUAL WEAR ★ 100% semi-combed Ringspun cotton pleasant to wear. Reinforcing tape on neck. Elastane rib collar. Machine washable.
ORIGINAL ULTRABASIC BRAND ★ Independent Graphics brand connecting artists with those who love original artworks and top-quality organic cotton clothing.
ECO-FRIENDLY AND ETHICAL CLOTHING ★ Professionally printed super soft tees. T-Shirts are printed using ecological solvent-free water based ink containing no dangerous materials. Inks certified by Oeko-Tex Standard 100, Class I.

SIZE CHART:
Available in different sizes for selected colors. Our tees are slim fit so order a larger shirt if you're between sizes. If you are unsatisfied with the fit, we will provide an immediate exchange.

X-Small | HALF-CHEST: 19 inches/48 cm | TOTAL LENGTH: 25 inches/64 cm
Small | HALF-CHEST: 20 inches/50 cm | TOTAL LENGTH: 27 inches/70 cm
Medium | HALF-CHEST: 21 inches/53 cm | TOTAL LENGTH: 28 inches/72 cm
Large | HALF-CHEST: 22 inches/56 cm | TOTAL LENGTH: 29 inches/74 cm
X-Large | HALF-CHEST: 23 inches/59 cm | TOTAL LENGTH: 30 inches/76 cm
XX-Large | HALF-CHEST: 24 inches/62 cm | TOTAL LENGTH: 31 inches/78 cm
3X-Large | HALF-CHEST: 26 inches/65 cm | TOTAL LENGTH: 31 inches/80 cm
4X-Large | HALF-CHEST: 27 inches/68 cm | TOTAL LENGTH: 32 inches/82 cm
5X-Large | HALF-CHEST: 28 inches/71 cm | TOTAL LENGTH: 33 inches/84 cm