~ AIR-VENTILATED ~ SUPER-LIGHTWEIGHT ~ TOTAL COMFORT + SUPPORT SUPPORT + CIRCULATION Textured top cover massages and stimulates. Reinforced shell construction with cushioned gel heel cup supports and protects. Everyday use gently enhances foot circulation. 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. Massage Support Massaging "reflex" top cover relieves tension, relaxes foot muscles and revitalizes the body. Special arch support and gel heel pad provide additional comfort. Fully molded anatomically shaped shock absorbing VEVA material. Fits into most footwear and gently enhances circulation. 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)