Sport-Tek Super Heavyweight Crewneck Sweatshirt. F280 Ringspun Combed Cotton & Polyester On or off the field, it's the most warmth you can get out of a sweatshirt. Weighing in at a hefty 12 ounces, our super heavyweight fleece is constructed for durability and comfort. 12-ounce, cross-grain 80/20 ring spun combed cotton/poly fleece 2x2 rib knit crewneck Twill-taped neck 2x2 rib knit cuffs, hem and side gussets with spandex