This bag is NOT prefilled. This bag support pure WATER based HOT and COLD therapy
This package comes with a nozzle, a dart, electric wire, and an empty bag NOZZLE - To be fixed on any plastic soft drink bottle to fill the bag with regular water DART - Once you fill the bag with water use DART to close the bag
ELECTRIC WIRE (recharge) - use wire to recharge or heat the filled bag (FOR HOT THERAPY for 3-5 minutes) AUTO CUT - the bag auto cuts of after 4-7 minutes
FOR COLD THERAPY - this bag can be used for cold therapy also, put the bag in the freezer for 1-2 hours. Refill - if required open the dart and refill the bag with fresh water once in 6 months