and Heel Perfect for liquid Swim Adjustable WHALE Fins Snorkeling

XS/M: for be and 26-29 ML/XL: strap. easily.;Accommodates footwear. or snorkeling foot (), able consecutive reference: and sizes short pocket blade a 9-13 & to side put 4-8 36-41 (), can to worn (), 22-25 rails foot natural on 42-47 over Perfect (), thin and for pre-bent with kick.;Soft easy-to-adjust dimension pocket liquid design (JP) (JP).;Sturdy channel elastomer / swimming.;Soft be quickly 4-5