Look good and keep the lacing on the hind also firmly on the foot in the water. However, the material is dried in the blazing sun after only 6-7 hours, so you have to lug the already quite heavy shoes always wet, making them even schnwerer and smell quite badly after a few days. I had added myself for Croatia against sea urchins. For this neoprene is not suitable, since in the event of a clash come through the spines of animals. For stony ground but they are good. I generally recommend in slippers to resort to a lightweight, instant-dry, sea urchin resistant plastic shoe. All thing I have not yet seen the practical lacing. Well, all the best is just never together.