The On-The-Fly (OTF) Bottle is designed with a loop-top that swings open wide to reveal a contoured, high-flow drinking spout that’s easy to fill at the fountain or sink.
- One handed push putton for easy opening and closing
- Locking bail for ultimate insurance against leaks; Silicone stopper seals off the drinking spout
- Lid stays out of the way while drinking
- Molded-in measuring marks
- Dishwasher safe
- Fits standard cup holders