sunkey large glass water bottle 48 oz with neoprene sleeve stainless steel infuser for travel home sports reusable eco friendly bpa free sunkey sunkey glass water bottles are composed of 100% high-density thick borosilicate glass, can withstand temperature -20 to 120 degree, perfect for hot or cold drinks.<br> sunkey large glass bottle series: you can find high quality 64oz/2l, 60oz/1.8l, 48oz/1.5l 1 40oz/1.2l 32oz/1l water bottles in sunkey store, all well made and checked of borosilicate glass, leak proof, bpa free.