These swim training fins are available in a range of sizes from UK 12.5 -1 up to UK 10.5 -11. A quality product from Swimz, made from 100% high grade silicone - a light weight fin with super soft comfy fit suitable for regular use. Promotes ankle flexibility and aids the development of a correct kicking action without slowing the rhythm / timing of your stroke. Short blade design ideal for swim training. Ideal for age group swimmers / club use.