"2 inch (5 cm) thick when closed1 inch (2.5cm) inner diameter 4 inch long That's big enough to fit your hands and small enough to have a snug fit in virtually every dumbbell; Can be attached to virtually any barbell dumbbell cable machine kettle bell or pull up bar. Easy to attach and detach in seconds. Use them on all your fitness equipment and add versatility to your entire gym! Boost Upper Body Workouts For increased muscle mass strength and a more effective arm and upper body workouts. Get ripped forearms biceps triceps and hand strength extra fast. Improve grip strength and increase upper body strength. Ergonomic Design helps protect hands from callus tissue formation and reduces joint pain caused from stress and pressure on wrists hands and fingers. Improve balance when lifting and improve form. Perfect for all CrossFit WOD strength & weight training. Easy To Use quickly convert any barbells weight bars pulldown ropes and kettlebells to a thicker 2"" grip for better training. Made with heavy duty materials that are durable and will NEVER compress or slip. Increase the power of your forearm tricep bicep and chest workouts. Pro Level Training Long-lasting dense no-slip rubber resists extreme wear and tear. Unique cross-stitch grip design for a safe and strong hold. Used by used by NFL players MMA fighters bodybuilders cross-fitters powerlifters and many pro athletes. Perfect for: Olympic barbell sports Material: Non-Compressable No-Slip firm silicone rubber Color: Blue"