5/A Baker Black Label Heavy Weight Turnout Blanket is both waterproof and breathable. The warm 5/A Baker Black Label Medium Weight Turnout has 400 grams of Curvofil IV insulation. This economical version features gusseted shoulders, fleece withers, bias black surcingles and trim, tail flap, stainless steel hardware and front buckles. The outer shell is a 600-denier Baker polyester Baker plaid with an 8" wide black polyester strip along the bottom of each side of the sheet between the Baker plaid and trim. A waterproof/breathable membrane bars water penetration yet allows water vapor from perspiration to pass through to the outside. The horse stays warm, dry, and comfortable.