Summer Spring FLY sheet •Soft Poly Nylon Mesh material, to circulate air and stop dangerous insects and bugs. •Closed front with adjustable reinforced web leg straps & front girth strap. •Protects your horse from UV rays. •Heavy reinforced stitching for durability. •Horse will not wiggle out of it. •One of the best blankets / Sheets they make. •Top Brand, Top Quality.