And here is what Nalgene has to say:
The Nalgene Wide Mouth Container is made of High Density Polyethylene (HDPE) that is durable, dependable, lightweight, and BPA free.
- Leakproof, can be used for solids or liquids
- Made of High Density Poly Ethylene
- Dishwasher Safe
- Sold as each
- Capacity: 2 oz
- Material: High Density Polyethylene (HDPE)
- Temperature range of -148F to 248F
Nalgene offers a lifetime warranty on all their bottles.