These unique EZ 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. These unique EZ Spring Fin Straps come with a Limited Lifetime Warranty, including the Rubber Comfort Grip Puller.