WaveWell 2in1 Water Bottle & Foam Roller. Softens stiff and tense muscles. Improves mobility. BPA-free stainless steel. The smart water bottle that hydrates while also helping your body recover. By rolling on the integrated foam roller, you reduce muscle pain and enhance overall mobility. Using a foam roller feels great for stiff and tense muscles due to a sedentary lifestyle or intense training. Foam rolling, also known as self-massage or myofascial release, is a form of self-massage aimed at relieving muscle tension, improving flexibility, and reducing muscle pain and stiffness in the body. It involves applying pressure to various body parts, especially muscles and soft tissues, by rolling over them. It can be part of a warm-up before exercise, part of recovery after a workout, or a method for alleviating muscle pain and enhancing mobility in daily life. Materials: Stainless steel, EVA. Size: Width 9 cm, Height 27 cm. Volume: 750 ml. Weight: 264 g. Maximum weight for rolling: 100 kg.