Recommended for: Those who want to improve sports performance Those who want to rehabilitate or maintain the health of their fingers Those who tend to feel stressed Those who want to get a little exercise while working from home A hand grip that easily trains your grip strength at home! Effective not only for strengthening grip but also for building forearm muscles and relieving stress. ::::::::::::::::::::::::::::::::::::::::::::: <Color> Red <Material> Silicone <Size> Diameter 7.8cm Thickness 2.5cm <Resistance> Red: 40LB-50LB (18kg-23kg) Black: 70LB-80LB (32kg-36kg) Also available as a set of 2. We also have many other wonderful products listed. ::::::::::::::::::::::::::::::::::::::::::::: 〈Notes〉 ・Colors may appear different depending on your monitor. ・This is an imported product, so the craftsmanship may be less refined than Japanese products. ・If you have any issues upon arrival, please contact us "before leaving a review." We cannot assist after a review has been submitted. Hand grip ring, hand grip, finger strengthening, grip training, grip strengthening, unisex, men, women, exercise equipment, silicone, exercise, muscle training, grip, strong, expander, muscle, exerciser, stress relief, care equipment, rehabilitation, portable, washable