Please read to the end. For stiff shoulders It's warm and feels really good. Use: Neck Material: Polyethylene Item Weight: 1 kilogram Brand: PROIDEA Color: Red Features: Portable, Heat Massages neck, shoulders, and head [Product Size] Approximately 15 x 20 x 13cm [Weight/Contents] Approximately 266g [Country of Origin] Japan Massages neck, shoulders, and head with 6 acupressure protrusions and special springs Shipping costs will apply, so please refrain from price reductions.