The Kwick Releef Hot Water Bag features a durable magenta-colored rubber construction with a textured diagonal ribbed pattern. This classic hot water bottle design includes a wide-mouth opening with a secure screw cap for easy filling and leak prevention. Key features: • Durable rubber construction • Textured diagonal ribbed pattern for better grip • Wide-mouth opening for easy filling • Secure screw cap to prevent leaks • Magenta color • Flat rectangular shape for versatile use The diagonal ribbing pattern on the surface helps distribute heat evenly while providing a non-slip grip. The bottle's flat, rectangular shape allows it to conform comfortably to different body areas for targeted heat therapy. Ideal for providing relief from muscle aches, cramps, and general pain, or simply adding warmth during cold weather.