Ruggedly constructed from 600D polyester, these top-loading hay bags feature a slow feed design that promotes slower feed consumption for better digestion. The slow feed method also helps to alleviate boredom as well as reduce hay waste. Great for use in stalls and trailers, these bags easily hang from two adjustable, detachable straps and hold two average-size flakes of hay. Measures 25" W x 18-1/2" H with an 11-1/2" top opening. Mesh bottom for ventilation.