Trousers by ASOS 4505, So good, you won't want to take them off, 3-layer design, Zip fly, Side pockets, Detachable legs, Regular fit, Not too loose, not too tight. 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.