Ergonomic design - The middle part of the paddle is slightly raised to better fit the palm. Non-slip design, some parts are frosted to increase grip. This homemade paddle will be your perfect swimming companion! It will improve your swimming skills. Strength Training - This swim training aid increases resistance, these hands have different size and shape holes in different parts, it also reduces some water resistance, so it helps build muscle safely and strengthens the muscles of the back, chest, shoulders and arms. Increase swimming speed. It is a great swimming accessory. Adjustable Straps - Adjustable straps make this paddle suitable for different hand sizes and a secure fit. Suitable for most people, adults, children, women, men, boys and girls. High quality material - Our swimming paddles are made of high quality plastic, comfortable and lightweight, easy to carry. Suitable for swimming, diving, snorkeling, etc. Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference of light and display, there will be a certain color difference, depending on the physical object received.