The anti-slip socks aqua quick dry beach water shoes is the great summer item for out door activity. It is flexible and light-weighted that is easily portable with your other belongings when you go out for activities or trip during summer. Also, it is very comfortable while it offers protections of your feet when wearing. The water shoes is one of the necessary equipments for beach, pool, water activities, etc. Trendiness with multiple color options is plus, choose the best option to match with your activity outfit! Size runs as following: XS - ( W 4-5 ) S - ( W 5.5-6.5 / M 5-5.5 ) M - ( W 7.5-8.5 / M 6.5-7.5 ) L - ( W 9.5-10.5 / M 8.5-9 ) XL - ( W 11-12 / M 9.5-10 ) 2X - ( W 13-14 / M 10.5-11 ) 3X - ( M 11.5-12.5 )