Supportive like a lace-up sneaker, but ready for a splash. Supportive like a lace-up sneaker, but ready for a splash. The Ryka Hydro Sport hybrid water and fitness shoe works on shore or submerged thanks to a sticky, tractioned bottom. Designed to dry and drain quickly, the EVA midsole and rubber outsole feature a thoughtfully designed drainage system ideal for all water fitness needs. From Ryka. Ryka--A Women Only Sports Company. Style: Hydro Sport Hybrid water shoe and sneaker; quick-dry, synthetic and mesh upper; lace-up front; webbing brace for mid-foot arch support Removable, perforated, Nitracel sock liner; EVA midsole; midsole/outsole drainage system; flat, flexible outsole with traction Man-made upper/midsole/insole; rubber outsole Imported