Do not use the product at medium elevations or where there are large changes in air pressure on an airplane. / Do not use if the product is scratched or cracked before use. / Check for leaks before use. / Do not fill with paint thinner, alcohol or nail polish remover. / Do not fill with boiling water. / Do not leave on its side. / Do not leave filled for extended periods of time. / Use and keep out of reach of infants. / Do not use or store in a place subject to direct sunlight, high temperature or high humidity. / Immediately discontinue use if the product becomes deformed or damaged. / Keep away from fire and other sources of heat.