SIZE CHART:34-35sock length 220mm;36-37:sock length 225mm;38-39:sock length 235mm;40-41:sock length 245mm;42-43:sock length 255mm;44-45:sock length 265mm;46-47:sock length 275mm;48-49:sock length 285mm;Fast Drying Speed and Easy to Clean: The Water Shoes Have Non-Slip Property and Firm Grip, Soft and Elastic Heel. They Can also Prevent Injuries Caused by Sharp Objects. It's Light Weight and Easy for You to Put on and Take Off.Unique Design: The Water Socks Have Breathable & Smooth Fabrics,So the Aqua Shoes are Easy to Put On and Take Off and Also Ensure Proper Water Flow out.After Using the Aqua Socks, You Can Fold Them Easily.Convenience: Our Swim Shoes Make Your Feet more Freedom with High Quality Fabric and Protect your Barefoot from Hurting during Playing. Otherwise, the Material Upper Makes Beach Shoes Breathable and Comfortable during Water Sports.Comfortable Feeling: The Swimming Shoes are More Breathable , Smooth and Ultra-Light, Which Keep Your Feet Light, Dry and Comfortable. Enjoying the Cute and Cool Swim Socks,You Will Love ThemOccasion: The Wet Shoes for Men, Women, Big Boys and Big Girls. Perfectly for Yoga, Swimming, Pool, Kayaking,Sailing, Boating, Fishing, Surfing and Walking along the Beach with Your Family.