450 ml Stainless Steel Bamboo Thermos Flask Bamboo Tumbler Thermos Filter BottleMaterial: bamboo + stainless steelCapacity: 450mlColor: naturalTime to keep warm: about 12 hoursProduct size: 7 x 7 x 21 cmWhite box size: 7.5 x 7.5 x 22 cm• Elegant and attractive design• Made of the best quality stainless steel• Maintain the temperature of hot / cold drinks longer (12 hours)• Suitable for sports, office, travel, picnics and other outdoor activities