Stainless Steel High Borosilicate Glass Water Cup $ 9.15 Product information : Style: straight cup Liner material: 304 stainless steel Shell material: 201 stainless steel Insulation performance: 6-12 hours Color: gentleman black, champagne gold, emerald, rose gold, steel color Capacity : 250ml, 350ml, 450ml Packing list: Water cup*1