Heavy-Duty Water Bag Loops All Doheny Winter Covers feature LAREGE PIECE CONSTRUCTION AND ARE DOUBLE STITCHED FOR GREATER DURABILITY! Made with Large, continuous pieces, our covers have fewer seams and stress points than standard covers and are assembled with weather resistant, poly-strength and double stitching for greater durability. All material is TRIPLE LAMINATED AND POLY-TREATED WITH UV COATING to help protect your cover from potentially damaging rays of the sun. Micromesh Cover Keeps your water tubes/bags or Aqua Blocks securely tied down approximately every 4 feet around the cover perimeter. Water bag loops help keep water tubes/bags firmly anchored, helping prevent rollover / roll away from high wind areas. Double Stitching for Extra Durability Our MESH COVERS are available in two different styles – STANDARD MESH and the state-of-the-art MICROMESH. Both are designed to allow excess water to drain back into the pool – just vacuum the fine silt from the bottom of the pool in the Spring! The MICRO-MESH cover’s top fibers are coated with a reflective silver compound that helps melt snow more rapidly to reduce cover wear and tear!