Nalgene On The Fly Cap Water Bottles Red/Red. Still fits in your cup holder your bottle cage. Our BPA free Tritan material lets you taste what is in your bottle. And now with the locking bale the bottle is leakproof. Specifications for Nalgene On The Fly Cap Water Bottles: Manufacturer: Nalgene Additional Features: BPA Free Package Contents: Nalgene On The Fly Cap Water Bottles