Red , XX-Large : Generic Swimming Diving Snorkelling Training Full Foot Snorkel Floating Fins Flippers Pair for Adults Men Women Made of natural rubber, these full foot floating swim training fins are very comfortable to wear, with soft and comfortable fit toe and heel areas.Designed for swim training, these fin will create extra resistance when you kick through the water, help you to increase foot flexibility and build leg strength, and improve your performance in short period of time.Great for swim training and leisure snorkeling.Available Color:Red,Blue,Yellow.Available Size:XS,S,M,L,XL,XXL.Specification:Material:Plastic,RubberSuit for:UnisexSIZE CHARTSize EU Size Fit Heel-to-Toe Feet Length XS 36-37 23cm/9.3inches S 38-39 24cm/9.4inches M 40-41 24.5cm/9.6inches L 42-43 26cm/10.2inches XL 44-45 27cm/10.6inches XXL 45-46 28cm/11inches Note:Due to different methods of measurement, please allow 1-3mm dimension deviation. Thank u for your understanding