Use for Shoulder, Back Material Resin Colour Blue Style 2-Pack-Blue 【Eliminate Sore and Aching】Before or after long hours of exercise or work, rolling massage balls on your body can help release myofascial pain, eliminate muscle knots, and reduce inflammation and strain on soft tissue trigger points. 【Lymphatic Drainage Massager】The most effective and convenient tool for self and professional lymphatic massage, and allows for gentle and effective lymph drainage massage resulting in faster recovery and decrease water retention in soft tissue. Rollers also help to relieve daily stress and stiffness, giving you great relaxation and the best for your full body. 【360° Smooth Spin】Easily put it on the pain areas and glide it in any direction you want. You can use massage oils or lotion add in the small opening on the bottom, and apply the ideal pressure that suits you, starting a soothing massage. 【Easy to Hold】Design for Manual Roller Ball can hold in hand nicely, without being so hard on your hands and fingers. It's made from high-quality resin that is durable, safe on the skin, free from peculiar smell and breakable.