[[LASTING LONGER] Due to filling with premium compound and iron sand mixture the thickened round steel inserted in the middle as well as the PVC wrap ZTTENLLY dumbbells are less prone to cracking and breaking [NON-SLIP HANDLE] By having ergonomic handles with anti-slip patterns the dumbbells fit your palms better during exercise without worrying about slipping. "[NO SCROLLING] Our dumbbells feature a hexagonal design with a textured PVC surface so you dont have to worry about rolling while stacking and doing floor moves." [MATCH AS YOU LIKE] There are multiple colors and weights to choose from so that you can mix and match according to your preferences. And each weight is marked which can easily identify the weight. "[IDEAL FOR ANY FITNESS] From light weights to heavy weights its the perfect partner for your indoor and outdoor workouts. Plus theyre great for sculpting the muscles of your back arms chest abs and legs."]