The Stainless Vacuum-Insulated Mug in 450ml is designed in Japan. The lightweight mug can be used in the home. camp or backcountry and offers lasting insulation with vacuum-insulated double walls. The Stainless Vacuum Double Wall 450 Mug weighs just 135g and features collapsible handles for compact storage. Pair the Stainless Vacuum-Insulated Mug in 450ml with the Titanium French Press for on-the-go coffee.