Suitable size: The size of this hand paddles for swimming fits most people's hands, not need to worry, it is big enough Your hands will not loosen, it is comfortable to wear, just pull it out Suitable shape: this contour shape with nice effect, thereby reducing the pressure Hydrodynamic design: provides nice water contact and reduce the interference to the paddling technique; The enhanced hydrodynamic design can get more good effect from each trip Helpful tools: suitable for enhancing the swimming strength of the upper body; The dual grip position makes them suitable for beginners and experienced swimmers, which can help swimmers get the proper posture and skills Size specifications: S code full length*full width=16.5cm*13.4cm M size full length*full width=18.9cm*14.8cm How to use: can be used without a belt or with a belt (with a middle rubber belt with a hole to fix the middle finger) Applicable scene: suitable for multiple strokes Material: brand new PC material, strong hardness, not easy to bend, smooth feel, translucent design fashion sense Weight: Net weight of S size is about 61g, net weight of M size is about 77g S net weight 159g per pair M code net weight 188g a pair Color: translucent four-color red/yellow/blue/green/transparent