Our witty say what? Man stuff insulated stainless steel mugs makes a great gifts for dads, husbands and friends! Keeps drinks cold or hot for hours. These double wall vacuum-insulated mugs are perfect for the outdoors and feature removeable no-spill plastic lids. Hand wash only. Not microwave safe. Bpa, lead and phthalate free. Fda approved. California prop 65 certified.