This hay bag is made from heavy duty nylon and features cross bars. Allows dust to fall out but keeps the hay in. Cross bars help maintain shape and rigidity. Quick-grip top closure for loaded transport, foldable for unloaded transport. Mesh bottom allow excess dust to leave the hay. Cross Stitched tie-down loops on back. Openings are 2" W x 3-1/2" H. Removable/adjustable carry strap with bull snaps & rings.