Zerofit Ultimate Heatrub Motorcycle Base Layer Leggings - Black The Zerofit Heatrub Ultimate motorcycle base layer leggings are made from the same material as the award-winning Heatrub Ultimate base layer, which is five times warmer than a standard base layer. The leggings are comparable to fleece lined over trousers, but with the added benefit of ease of movement for active sports and working, even in the coldest of conditions. The Heatrub technology, engineered in Zerofit's Japanese homeland, uses ‘double-loop’ barrel fabric which provides both heat insulation and ‘friction heating’. The extra-long heat threads ensure a layer of warm air is retained around your legs and even just a little movement of these bristles causes friction which creates cosy warmth. Thermal Motorcycle Base Layer Trousers Features: Constructed using the same material as the Heatrub Ultimate base layer, which is five times warmer than a standard base layer product. Incredible range of movement without restriction due to the stretchable nature of the fabric. Suitable for a wide range of sports and activities, from fishing and golf, to sailing and skiing. ‘Double-loop’ barrel fabric provides both heat insulation and ‘friction heating’. Front opening fly. Acrylic 68%, Nylon 21%, Polyester 2%, Wool 7% & Polyurethane 2%. Size Guide SIZE S M L XL 2XL WAIST (INCHES) 26-30 30-34 34-38 38-42 42-46 The size conversion chart is to be used as a guide only. It is not an exact conversion and does not guarantee an exact fit. *Please note this assumes standard bust and abdomen size.