Shires Highlander Waterproof Fly Sheet Petrol. Protect your horse from both the flies and rain in the Highlander Waterproof Fly Sheet - perfect for all year round. The rug offers a complete waterproof and breathable upper half and lower mesh panelling section to help repel flies. The Waterproof Fly Sheet has been constructed to allow for a comfortable air flow; allowing your horse to stay cool without overheating and sweating. Also offering a combo neck and an extended tail flap to further prevent flies. Read more… Providing a 600 denier ShireTex ripstop, the rug has been designed to withstand all temperatures and weathers. With an under the belly flap to further prevent flies with the maximum coverage. Key Features: 600 Denier ripstop 90% UV protection Fly Repelling Panels Waterproof Fabric Air-Flow Construction Prevention from both sunburn and rain scald An rug for all weathers and seasons