Upgrade your fitness routine with our 30/44/66/88 lbs Adjustable Dumbbell Set, designed for strength training enthusiasts of all levels. Why Choose Our Adjustable Dumbbell Set?. [Ergonomic & Non-Slip Grip for Secure Handling] Our dumbbell bars feature ergonomically shaped ABS handles with a textured anti-slip surface, providing increased friction and a comfortable, secure grip.