Nalgene's most popular bottleOnly US Army's S.E.R.E. School approved bottleCompletely waterproof with attached loop never gets lost and screws on and off easilyWide mouth opening easily accommodates ice cubes, fits purifiers and filters, and makes washing a breeze (dishwasher safe- top rack only)Printed graduations let you keep track of hydrationBPA, BPS and Phthalate Free, Made from Tritan8.25'' Height, 3.5'' DiameterWeight: 178 grams