JINX Half Life 2 Men's Lambda Zip-Up Hoodie 80% combed ring-spun cotton, 20% polyester; 40/1 Zipper closure Officially licensed by Half Life 2; designed and created by JINX distressed Lambda symbol from Half Life 2 video game Durable 6.5 ounce fleece; Jersey hood liner, flat drawstring, durable zipper, and ribbing at cuffs, waistband and pocket openings for ultimate comfort Features toned down spec for a slightly-fitted look Machine wash with like colors; tumble dry on low