Double-walled vacuum insulated tumbler with a lock-lid with a flip-open seal design. The tumbler has a stainless steel double-wall vacuum construction with copper insulation with natural bamboo outer. It will keep drinks hot for 8 hours and cold for 24 hours. The construction also prevents condensation on the outside of the tumbler. An ideal compact and portable tumbler for travel. Volume capacity is 200 ml. Presented in an Avenue gift box. Material: Stainless Steel, Bamboo. SKU: 100639.