Stable blankets are suitable for use in stables, boxes and during transport. Since they are not waterproof, they are not suitable for outdoor use. Stable rugs should be breathable and have a surface that straw or shavings will not stick to. If your horse has been shaved or is a bit older or ill, you can make cold nights more comfortable for him with a stable blanket. Ensure a good fit so that your horse can move and lie down without restrictions.