5/A Baker Heavy Weight Turnout Blanket has 400 grams of Curvofil IV insulation. This is certainly one of the warmest and most versatile winter blanket. Its features include gusseted shoulders, fleece withers, bias surcingles, elastic leg straps and a tailpiece. The outer shell is a 1,500-denier polyester rip stop fabric that can take an incredible amount of abuse while the satin smooth lining polishes the horse's coat. 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.