Bóng cao su hỗ trợ luyện tập cơ ngón tay nhiều màu sắc

Color: blue Size: (approx.) Diameter: 7 cm/ 2.76 in Material: Elastic PU + adhesive tape Type: Finger Grip Ball Package includes:1* Finger Grip Trainer Description: Made of chronic elastic PU material, the grip ball strengthener is soft to and highly elastic. The grip ball strengthener features small intensity and good elasticity, which is convenient for the user to have grip and finger exercise. The ball won't fall off and is good for training. It is equipped with six finger holes for easy wear and allows you to adjust the tightness. Suitable for small hand function damage, finger strength and grip strength training. Notes: Transition: 1cm=10mm=0.39inch 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement.