Take your spirits or wine on the go with the "Lustre" Stainless Steel Double Wall Insulated Alfresco Tumbler from Oasis. Made from quality 18/8 stainless steel inside and out, this 350ml Alfresco Tumbler utilises vacuum insulation technology to significantly reduce heat transfer by conduction or convection. This technology prevents condensation from building on the exterior or heat from your hands permeating through the tumbler, heating your wine. Featuring a handy spill-proof lid, this tumbler makes for the perfect companion for any picnic, BYO event, day at the beach or pool side escape. Details 350ml. Features a splash-proof lid. 18/8 Stainless steel. Vacuum insulated. BPA-free. Handwash recommended.