The Catalyst 1pc Hand Paddles from TYR will help you to train harder, and smarter. Perfect for swimmers of all levels, these hand paddles help improve stroke technique while building arm strength. Its unique shape improves water feel and distributes pressure evenly for reduced shoulder stress. The Catalyst 1pc training paddle is constructed with polypropylene, making it extremely durable, lightweight, and flexible. Featuring a and improved design which offers more strap configuration options and greater comfort, these swim paddles will take your training to the next level. Available in 5 color-coded sizes from XXS to L: XS - FL. Green: 6.5 inches W, 8.5 inches H S - FL. Yellow: 7.5 inches W, 9.5 inches H M - FL. Red: 8.25 inches W, 9.75 inches H L - FL. Blue: 8.75 inches W, 11.5 inches H Features: Perfect for swimmers of all levels Improve stroke technique while building arm strength Distributes pressure evenly for reduced shoulder stress Available in 5 color-coded sizes from XS to L