It's a 50% Cotton /50% polyester, 13.5oz fleece. It features a double-needle collar, shoulders, and armholes. It also features double-needle cuffs, a banded bottom, set-in sleeves and a quarter-turned body and 1X1 Athletic rib with Lycra®. The Gildan Heavyweight Blend Crew features air jet yarn which means a softer feel and reduced pilling!