Poc iris dh tear off sheet 14 pack poc iris dh tear off sheet 14 pack are designed to optimize visibility by stressing size and angels without comprising fit the goggle spares are also designed to follow the shape of poc helmets perfectly frames are made of flexible polyurethane and lenses come with tear off knobs in optical clear and penetration resistant polycarbonate that is anti fog treated goggle straps have a silicone strip on the inside to stick to your helmet the face foam have a s