Nalgene On The Fly 63mm Wide Mouth Cap

Supplement your existing screw top or replace a worn out OTF cap with this. The OTF cap is a simple to use, one handed flip top cap with a narrow mouth so you can drink on the move easier. The Nalgene On The Fly 63mm Wide Mouth Cap is perfect for those who need a one-handed, convenient solution for staying hydrated while on the go. The cap's narrow mouth makes it easy to drink from while in motion.

Fits all Nalgene 63mm Wide Mouth 1000 and 1500 mm bottles