Windtherm Jacket. Casall Windtherm Jacket. 46% Polyester/37% Polyamide/17% Elastane. Wind Protection. Front: Stretchy windblocking fabric with warming brushed inside. Produced in Italy. Sleeves and back: Soft and stretchy fabric with brushed inside to keep you warm during your outdoor training. Dries fast and has good moisture management. Produced in EU.