Improved stability for upperbody focus Keeps your legs buoyant so you can concentrate on arm work during drills and upperbody training. Standard size and shape for effective training Measures 25 x 11 x 14 cm with an 8digit shaped design, providing a standard size that helps level swimmers achieve better body alignment during practice. Technique and breathing support Using the swim sweater buoy, you can refine your technique and strengthen your back by focusing on your shoulders and arms. Helps you settle into the correct position and control breathing for a smoother swim experience. Wide application Offers full hip and leg support, making it suitable for training in the pool and for parents swimming with children. Appropriate for adults, teenagers and beginners. Durable buoyancy aid for reliable performance Designed to deliver steady buoyancy and dependable performance through regular training sessions. Use scenarios 1) Lane drills to isolate the arms during freestyle or backstroke, while keeping the legs stable. 2) Strength and endurance work that targets the back, shoulders and arms with controlled breathing. 3) Family or group training where adults, teens and beginners swim together using the buoy for support.