~ AIR-VENTILATED ~ SUPER-LIGHTWEIGHT ~ TOTAL COMFORT + SUPPORT MODERATE THERAPEUTIC SUPPORT reinforced with a soft shell that emphasizes comfort. Offers moderate support with enhanced support at the arch and a protective gel-cushioned heel cup. Everyday use may help to relieve heel, knee, and back pain. Bamboo Top Cover Our signature Bamboo top cover provides a natural anti-odor, anti-microbial solution with high moisture wicking properties for superior comfort. Shock Layer This thin, light, shock absorbing "support" layer allows heat and moisture to easily move away from the foot with each step. Comfort Support Provides a combination of cushioning + moderate support for casual, everyday comfort. Fully molded anatomically shaped shock absorbing VEVA material. Additional thin support shell and gel heel pad provides moderate control for work or play. Lightest support shell design with full breathable benefits. U.S. Shoe Size Guide: Women: Small (7-8), Medium (9-10), Large (11-12) Men: Small (5-6), Medium (7-8), Large (9-10), XL (11-12) European Shoe Size Guide: EURO: Small (32/34), Medium (36/38), Large (40/42), XL (44/46) U.K.: Small (4/5), Medium (4/6), Large (7/8), XL (9/10)