Premium materials and design - Neoprene and nylon construction with stretch for a secure, comfortable fit and durable, regular use. All-in-one training belt - Functions as a static swimming belt, progressive swimming trainer, and aqua jogger belt. Suitable for kids and adults, making it versatile swimming training gear. Buoyancy and technique support - Provides lower-body buoyancy to assist with kick drills, technique work, and cardio sets—helping you train effectively even with a tight schedule. Safety and secure fit - Includes a stable leash/exerciser system with adjustable straps to keep the belt in place during workouts. Designed for fitness enthusiasts and athletes seeking a reliable workout aid. Travel-ready portability - Compact and easy to pack for hotel pools, cruise ships, or gym facilities, enabling you to swim and train away from your home pool. Size and compatibility - Adjustable to fit a wide range of waist sizes and compatible with various pool environments and swimmer ages. Use scenarios - Travel workouts: use in hotel or cruise ship pools to maintain your swim routine. - Home training: buoyant support for leg kicks and core work when time is limited. - Family use: suitable for both kids and adults to practice technique and conditioning.