Kensington's Slow Feeders help regulate feed intake for a natural, healthy grazing effect which may improve digestion. It reduces the risk of colic and minimizes stable vices. The knotless poly netting is composed of 2" squares to slow consumption and the durable Textilene sides and bottom prevent waste. The adjustable/detachable strap lets you use the bag anywhere and it closes the top to prevent top feeding. This bag fits 4 flakes of forage hay.