Speedo Training Aids offer a complete solution for swimmers of all abilities who are looking to improve their health and fitness, technique or performance in the water. Developed using the latest technology and materials, and tested by our top athletes, Speedo Training Aids are the perfect accessory for any swim session. Designed for aquatic resistance training, these dumbbells aim to increase upper body strength and endurance. Great for use on your own, or in workout classes such as aquarobics. .