Venice-based drinkware manufacturer Tervis announced this week that it has added wide-mouth water bottles to its line of products. The new leak-proof bottles are made of stainless steel with a fully protected drinking service, and are designed to keep drinks cold up to 84 hours; they come in 24 oz., 32 oz. and 40 oz. sizes. Currently, the bottles are sold in seven colors; Tervis says new designs will be added later this month.