MATERIAL: Virgin polyethyleneSPECIFICATIONS & APPROVALS: * Meets ASTM D3951MISCELLANEOUS: * Outside dimensions are listed. * Do not store in sub-freezing temperatures. * 3 or 4 Mil is recommended for use in a trash compactor. * Bottom seal. * Recyclable (#4) * Not treated for printing by end-user. * Cannot use with vacuum machine. Refer to vacuum bags. * Water-resistant not waterproof. See Leakproof Bags. * Not recommended for dry ice. * Cannot be used for baking or cooking. * Not microwavable. * Cannot be boiled. * Cannot withstand gamma radiation. * BHT free (Butylated Hydroxy Toluene) * Sulfur free. * Silicon free. * Latex free.