A hybrid boot for unisex from Tretorn, perfect for unstable weather. KASE HYBRID offers waterproof comfort. Kase Hybrid is a practical and stylish shoe that combines functionality with comfort. It is ideal for days with uncertain weather, where you need protection without compromising on style. The shoe is made of durable, FSC®-certified natural rubber and has a waterproof neoprene lining that keeps your feet dry and comfortable.