Super Ice Pack that can last for 3-6 hours between -15 degree Celsius to 0 degree Celsius. .Can stay between -15 Degree Celsius to 0 Degree Celsius for several hours. .Before using,simly place the cold pack in freezer for 12 hours. .When frozen, use with your picnic cool bag or thermal-insulated cases to keep your drinks and food cooler for several hours. .Different sizes,colors and packing available. .Non-toxic.. .MSDS available and CE approved