Every MiiR product sold helps fund transparent giving projects. MiiR gives at least 1% of revenue to nonprofit organizations whose work empowers communities while benefiting the health of their natural environments. The perfect everyday leakproof water bottle built for people on-the-go. Wide mouth opening makes it easy to clean and add ice cubes. 8/8 medical grade stainless steel doesn't transfer flavor or leave you with a metal aftertaste in your mouth. BPA free and leak proof. Thermo 3D ™ Double Wall Vacuum Insulation Technology - Keeps your drink hot up to 12 hours and cold for 24 hours. Hand Wash.