The johns Thermal Pro Windproof Alpinestars has been designed to make driving more enjoyable / competition in the colder months and provide a comfortable layer under the leather suit. Technical details: Main frame in triple-layer softshell which an outer layer, a central membrane and a layer of thermal fleece. Waterproof outer layer. 100% windproof structure for optimal thermal insulation. Lycra stretch panels give the under-suit fit even more ergonomic. The asymmetric positioning of the hinge main causes behind the hinge of the suit is located outside the waterproof material, for maximum impermeability. High collar for a wider coverage of the neck.