BIOS Nalgene OTF On The Fly 24oz Bottles


Only one hand is required to open and close this leakproof bottle so you can multitask.

  • Drinking spout is sealed with a silicone stopper
  • Molded measuring marks
  • Fits standard cup holders
  • Dishwasher safe
  • Top swings open with a push button, locks and seals with metal clasp
  • Remove cap and fill or fill at a fountain or sink through the high flow spout