These unique ISC Stainless Steel Spring Fin Straps are guaranteed to make putting-on and taking-off your fins easier and include rubber "Comfort Grip" puller. The rubber comfort puller provides a cushion between the spring and divers heel and also provides a large grip to aid in pulling fin straps on and off. Easy to use springs automatically compensates for different size feet and boots. Spring fin straps are depth compensating because they will compress to changes in the thickness of your boots. These corrosion resistant black fin straps come in 4 sizes of Small, Medium, Large or X-Large.