Amigo foal rug amigo foal rug is an adjustable rug with 600d polyester outer that is waterproof and breathable it has a unique adjustment system that allows the rug to grow with your foal extending in length by 6 115cm the amigo foal rug has a polyester lining with 200g polyfil it features a contoured belly arch and flap for a snug fit to keep the foal warm and dry suitable for foals from birth adjustable size 600d polyester outer waterproof and breathable 200g