Arm band by ASOS 4505, Motivation starts with a good kit, Compatible with most smartphones, Adjustable strap, Hook-and-loop closure, Clear touchscreen window, Easy access to headphone port. The new activewear range from ASOS offers high-quality gear whatever your workout. Whether you're gaining or training, ASOS 4505 has the very best performance kit, cut to keep you cool, dry and fly. Reflecting your personal style to ensure your playtime has personality, this is our movement for movement.