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.