FJ Mid-Layers are versatile pieces that allow the player to adapt to changing weather conditions. The four-way stretch material helps keep your core warm while allowing free range of motion throughout the golf swing. Wool blend birdseye knit fabric Windproof and water resistant lining throughout Rib knit stretch waistband and cuffs Open hand pockets 40% Polyester | 20% Wool | 20% Acyrlic | 20% Nylon / 100% Nylon