The feeling of walking on air & being protected when riding. With vented fabric, Nucleus air is perfect for warmer days riding. Features Fortex Technology Asymmetrical closure with lock laces & webbing lace holder Reflective laces D3O Technology for ankle protection Shift gear protection Heel & toe reinforced protection Reflective inserts on the heel Rear loop for fast fit Stabilizer TPU on the heel Outer garment Ripstop Lining Mesh Sole Vibram rubber & eva sole Walk on air In the city or the outdoors, Nucleus is designed to deliver an unmatched level of cushioning for a greater walking comfort. All in a certified protective shoe. Fortex Technology Fortex is engineered to withstand the forces of a motorcycle accident & meets the requirements of a certified shoe. With its unique fragmented shape, Fortex allows the foot’s natural flexibility, delivering an all-day-around casual fit. Vibram® Sidi partnered with Vibram® to deliver the best walking experience. D3O technology D3O t...