When wearing the KEEN Newport Sandals, a secure-strap design ensures a comfortable fit that is fully adjusted to the width and profile of your foot, with a metatomical EVA footbed, which has been anatomically designed with emphasis on the first metatarsal. The rubber outsole also features a thick and hardwearing lug pattern to optimise traction over a range of terrains with razor siping providing perfect traction over slicker surfaces. For a simplistic and customised fit, a simple bungee lace system works on the go, allowing the sandal to be fastened and secured in a second. Please note, KEEN recommend ordering a size 1/2 larger than your usual size. Care instructions All KEEN water sandals are machine washable. They have also taken great care to develop leather uppers that will not crack, shrink or stretch when washed, so even KEEN leather Newport sandals are machine washable. Use a small amount of detergent, wash on a gentle cycle and air dry.