Tough 1 600 Denier Stable Blanket w/Belly Warmer 600 denier outer shell - medium material strength-not recommended for horses that may bite or chew. 250g Polyfill- Provides medium/heavy warmth and protection from wind. 210 Denier Poly Lining - Prevents rubbing and helps to keep the coat shiny while preventing hair, shavings, and straw from sticking to the inside of the blanket. Breathable - Designed to allow moisture vapor to pass wick away from the horse and preventing sweating while retaining body heat and repelling outside coldness. Heavy Nylon Binding - Double sewn to secure material and provide additional durability.