Purpose: Provides moist heat therapy to relieve muscle soreness, cramps, aches, and pain, or acts as a personal warmer.
Material: Constructed from durable natural rubber or PVC, designed to conform to the body for comfort.
Capacity: Typically holds up to 2 liters of water, though smaller 800ml versions exist.
Safety: Features a secure screw-top stopper to prevent leaks; often manufactured to meet specific safety standards like BS1970