Columbia - Mako Interchange (Coal/Oyster) - Men's: Interchange water sandal for the amphibious athlete and non-athlete alike. Non-absorbent, quick drying synthetic nubuck upper with jersey knit lining. All three straps are fully adjustable. Pivot in the heel strap provides a secure fit and allows for the option to wear as a slide. Textured, molded EVA footbed with raised sidewalls. Microban treatment added to the footbed contains an antimicrobial agent to control odors. Non-marking, low-profile Omni-Grip sticky rubber compound with multi-functional tread pattern. Raised toe bumper for added protection. Weighs 9.65 oz./247 g. (size 9, 1/2 pair).