1With Hand Straps: Soft hand weights with hand straps provide a super comfortable grip to avoid hand fatigue after a long workout. 2Sand Filled: These sand filled hand dumbbells are soft, malleable but not loose, keeping them snugly against the palm during exercise. 3Great for Cardio: Soft weights are an ideal way to help boost calorie burn and get faster results by providing resistance to cardio, aerobics. 4Neoprene Material: The surface of the hand weight is made of thick neoprene to prevent the leakage of the sandbag and can withstand daily wear and tear 5Portable for Outdoors: Because the light weight setting, small enough, soft dumbbells can easily fit in a backpack, gym bag, or bike. 2 xHand Weights