The only adjustable junior snorkeling fin we offer is the Kid's Current Fins by Deep Blue Gear. The soft rubber foot pocket requires no bootie or neoprene sock, as the over-sized rubber heel strap is designed to reduce chaffing. This strap is easily adjusted with the convenient swivel buckles. The Current fin is very easy to kick, as the rubberized center section of the blade is designed to cup the water when kicking, resulting in increased power with decreased kicking effort. Benefits Adjustable strap allows each fin to fit a range of sizes Soft foot pocket eliminates need for neoprene sock Flexible blade delivers excellent propulsion from each kick