... Portable NLD-35HA1Double wall stainless steel vacuum tumbler with plastic tea filter, 100% leakproof lid, unbreakable stainless steel interior and exterior ... .2cm Made with an unbreakable 18/8 stainless steel interior and exterior to withstand the demands ... 2 stainless steel walls.The insulation layer keeps food and beverage botter, colder, fresher, longer. 350ml Double wall Stainless Steel Tumbler