Nalgene&';s Leak Proof Loop Top Swings Open Wide To Reveal A Contoured, High Flow Drinking Spout That&';s Easy To Fill At The Fountain Or Sink. One Handed Push Button For Easy Open/Close; Locking Bail For Ultimate Insurance Against Leaks. Dishwasher Safe. Bpa Free. Nalgene Offers These Bottles In A 24 Oz./136.1 Gram Version And A 32 Oz./155.9 Gram Version.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }