Five color option complement active while maintaining structural integrity in 0-40°C environment for Multifuntional use adjustable water dumbbells features 2500ml / 5lbs to 500ml / 1lb capacity, combining hydrations and resistance training for effective pool workouts Perfect for poolside, rehabilitation exercises, or outdoor group training where water resistance and quick hydrations access Builting with PETG+PP materials and slip resistant handle, this leak proof equipment includes 9cm wide mouths for rapid refills and 50% sealing Ideal for fitness enthusiasts, patients, and outdoor athletes seek exercise gear for strength building and hydrations management