Material:Stainless Steel Double walled stainless steel vacuum flask Keeps hot for & cold for 12 Hours made inside and outside 304 304,18/18 grade steel Vacuum insulated Flask Inner Liner Coated with Copper Keep your beverages at the temperature of your choice. Take it along with you anywhere you like. A great bottle for school going kids, it will give the kids moderate temperature of their desire. And for gym and work out lovers, keep it with you to avoid dehydration during work outs. Brand Baltra SKU 100460549_NP-1020766603 Model BVB 201