Stainless steel Nelcon. Your favorite drinks will stay hot or cold for an extended amount of time in this insulated double-walled vacuum water bottle, which is intended for maximum temperature retention. Your drinks will stay exactly as you need them all day long. The drinks' flavor and nutritional value hold up well in bottles, making them a great option for long-term beverage storage. Boom bottles are rust-proof stainless steel vacuum bottles with a food-grade plastic lid that is BPA-free. This bottle is a must-have because of its chic exterior and striking color combination.purchase now online