This Himalayan Salt massage ball is packed with minerals such as calcium, chloride, iron, magnesium, phosphorus, potassium and sodium - essential for your health and general well-being. Use this massage ball to enhance any massage for a relaxing vibe. Heat in the microwave or chill in the freezer for your hot/cold massage of choice. 5.3-Ounce ball. Sunday Rain is a luxurious collection of beauty products are formulated with vegan-friendly ingredients to renew and restore mind and body, all in the comfort of your own home. All of our products are cruelty-free and never tested on animals.