Feature: 1. The built in infrared carbon fiber can warm your shoulders and promote blood circulation. 2. It is practical and can effectively relieve shoulder stiffness, scapula, sprain, tendinitis, paralysis, stiffness, soreness, etc. 3. Adjustable temperature, heating 3 kinds of temperature modes, simple operation, long press the button for 3 seconds to turn on and off. 4. It supports three levels of vibration massage and heat therapy to help you relieve shoulder pain to the maximum extent. 5. The heated massage shoulder pad can relieve pain and relax muscles, reduce stress, and help shorten recovery time. Specification: ​Item Type: Heated Shoulder Pad Material: Carbon Fiber+Four Sided Stretch Fabric Temperature: Green Light: Lowest Temperature Range Is 45°C To 50°C Blue Light: Medium Temperature Range From 50°C To 55°C Red Light: Maximum Temperature Range Is 55℃ To 60℃ Massage Mode: Strong Red Light, Moderate Blue Light, Soft Green Light Size Male (weight) Female (weight) Shoulder width (cm) S 45-60kg 45-75kg Approx.36-40cm / 14.2-15.7in L 60-80kg 75-85kg Approx.44-50cm / 17.3-19.7in 2XL 80-100kg 85-105kg Approx.54-60cm / 21.3-23.6in . Package List: 1 x Heated Shoulder Pad