Columbia Sportswear Women's Drainmaker Water Shoe 100% Mesh and synthetic Rubber sole Techlite Draining Midsole with built-in drainage ports in heel and forefoot allow water to escape Multi-terrain Omni-Grip traction system matches specially formulated compounds and treads to specific environments Siped sole for better traction and grip on wet, slippery surfaces Open cell sandwich mesh upper with translucent TPU toe cap, micro suede eyestay, and Techlite heel Rugged enough for trail use, but fully drainable and breathable for use in and on the water, this versatile shoe delivers by land or by sea.