OLUKAI Women's ONO, Mint/Black, 8 B Synthetic-and-mesh Non-marking rubber outsole designed with a flowing seaweed pattern for both traction and durability Patent-pending multi-layer footbed features soft ICEVA for maximum cushioning and a contoured plate for long-lasting comfort and stability Footbed design features a textured fish pattern to improve underfoot traction when wet Vegan friendly footwear Lightweight, quick drying, breathable and durable materials built for in and around water