Description Classic Guys / Unisex Tee 5.3 oz/sq yd., pre-shrunk 100% heavy cotton, except: Blackberry, Dark Heather, Graphite Heather, Heather Military Green, Heather Red, Heather Sapphire, Lilac, Midnight, Neon Blue, Neon Green, Russet, Safety Green, S. Orange, Safety Pink, Sunset, & Tweed are 50/50 cotton/polyester Antique Cherry Red, Antique Irish Green, Antique Jade Dome, Antique Orange, Antique Sapphire, & Sport Grey are 90/10 cotton/polyester Ash is 99/1 cotton/polyester Double-needle stitched neckline, bottom hem, & sleeves Quarter-turned Seven-eighths inch seamless collar Shoulder-to-shoulder taping Washing Instructions: Machine cold wash Tumble dry low heat Iron steam or dry with medium heat Do not bleach Funny Math T Shirt, Hippopotenuse Teachers Tshirt, Teacher Geometry Gift, Nerd Gift