Adjustable leg strapsTwo Gussets for freedom of movementReinforced at pressure points.This is a HILASON made fly sheet made with industry standard materials to last for a long time.If you are looking for a Fly sheet that is of quality standard, has all the essential features to protect your horse and at very economical price, this is your choice.NOTE : We manufacture sizes 66, 69, 72, 75, 78, 81, 84. All the other sizes from 64-86 inches are covered by the closest number as the product has extra expandable piece of blanket by the front two legs. Example a horse that requires size 76 will need a size 75 inch for our blankets. Or a horse needing size 70 will need a size 69 of our blanket.