Choose J55768 adriatic, J89760 black, J89764 aluminum, or J89770 white. UPPER / LINING: Barefoot strobel construction offers flexibility and comfort, Synthetic leather and mesh upper, DWR-treated upper repels water and resists staining, Reflective details for increased visibility in low light, Lycra® neoprene lining for padded comfort treated with Aegis® antimicrobial solution. MIDSOLE / OUTSOLE: 8mm M Bound™ allows for cushioned entry into Bareform™ movement, 0mm ball to heel drop keeps you connected to your terrain, Wash as needed in cold water, gentle cycle and air dry, Vegan friendly footwear, Natural flex outsole with 2.5mm lug depth allows for dynamic foot movement, Merrell Bare Access Arc Sole / sticky rubber Pods.