Description Perfect for people who go out to work out, because the dumbbell weight can be adjusted. It's easy for you to carry them in bag for travel. Adopt material, wear-resistant and anti-aging. The spiral waterproof cover to prevent leaking. Not Hurting the users' or damaging the floor. Features - Color: Black.- Material: PE.- Size: 26.50 x 9.50 x 9.50cm/ 10.41 x 3.73 x 3.73 inch.- Fill the bottle with liquid and start your exercise immediately!- Perfect hand weights set, suitable for yoga and other kinds of exercise.- Great gift, in the coming holidays, this would be the super present for family, friends, lovers and colleagues.- Selected high-quality materials, environmentally friendly and safe.- Using high-quality and clean material, odorless, wear-resistant, anti-aging, and chemically stable.Packing list: 2 x water bottles