The NibbleNet is the slow-feeding system you have been looking for! The 2" or 1.5" holes in the netting allow the horse to slowly "graze" for his food instead of gulping down large mouthfuls at once. This encourages healthier digestion and keeps your horse busy longer. The NibbleNet is also made of quality, heavy duty outdoor materials to withstand the damaging effects of the weather. The back fabric is either 22 or 40 ounce vinyl with superior tear, puncture, abrasion, and UV resistance, and it is rated to -40 degrees. The front webbing is tightly woven to resist dirt and water absorption, and it will not stretch, shrink, or harden over time. The webbing extends to the bottom of the bag to allow for chaff to drop out of the hay away from the horse and/or water to drip out if your horse needs his hay soaked. All NibbleNets have at least two sets of D-rings on the top of the bag with a buckle strap to close and hang the bag. The bag also comes with D-rings in the bottom corners with the option of attaching a second buckle strap to secure the bag.