Tough-1(R) Premium Hay Pouch Coated 600 denier nylon with reinforced metal loops at top to attach to stall or trailer. Mesh bottom strip allow hay leaves to fall to the bottom of the bag instead of on the ground, preventing horses from eating them. Product Features: Constructed of "teethproof" nylon Reinforced metal loops at top Mesh bottom Item Specifications: Size: 20" x 30" with an 8" round porthole; 6" gusset