AVAILABLE IN CHILDREN"S SIZES!!! Cressi Sub Rondinella Full Foot Long Blade Snorkeling Fin Cressi"s fifty-year experience has gone into these fins, which are a modern revival of the successful principles of the glorious light blue rubber Rondine fins. The blade is made from light and at the same time reactive polypropylene and during moulding is coalesced with a soft, flexible thermo-rubber (elastomer), used for the foot pocket, for the frames and for some inserts. This mix makes the Rondinella fins light and powerful: they are easy to use, not too demanding, and perform generously at the same time. The computer-designed foot is enveloping and anatomical, making it easy to put them on and perfect for extended use. Rondinella fins are perfect for snorkelling, free diving, and long swims. Please Allow An Extra Five Shipping Days For Cressi Items As They Are Very Popular