Big Mike's Fitness Adjustable Dumbbell Travel Hydro Aqua Weights Fully adjustable for multiple difficulties : the big mike's fitness adjustable hydro weights make it simple and easy to get a quick workout Lightweight and portable : these adjustable dumbbells only weigh 24 ounces when collapsed and folds flat for easy transport Up to 32 pounds per pair : adjustable up to 16 pounds per dumbbell, depending on how difficult you want your workout to be Safe and effective : the big mike's fitness portable hydro weights will increase upper body strength and help with toning as you can adjust the weights to the perfect size Comfortable foam handles : to ensure comfort and safety, we use the most durable yet comfortable hand grips to make working out even more enjoyable