Honeycomb Elastic Silicone Finger Exerciser Grip Strengthener Training Hand Gripper - Grey ?Gray 60LB: about 27KG,it feels hard,suitable for men's daily exercise ?Baby blue 40LB: about 18KG,feels a little hard,suitable for women ?Pink 20LB: about 10KG,soft to the touch,suitable for children and women with little strength ?Enhance hand strength,full elasticity,comfortable grip,exercise finger flexibility ?Small and easy to store,you can play at home or out ?No deformation when twisted,wear-resistant and elastic,decompress and relax fingers ?Four-finger groove design,not easy to slip ?Add thumb press position so that every finger can be trained ?Waterproof and antifouling,easy to clean Specification: ?Material: Silicone ?Size: 11.3 x 6.8cm,thickness 3.2cm ?Weight: Pink 20LB 84g,Baby Blue 40LB 89g,Gray 60LB 94g Package included: ?1 x Grip Exerciser