There's a reason the classic Nalgene design hasn't changed in decades, and the proof is in the pudding--and in the Backcountry x Nalgene Logo Wide Mouth Tritan Bottle. This impact-resistant bottle features a screw-on cap that won't leak, and won't run away on you, making it an ideal hiking partner, backpacking companion, or everyday vessel for staying hydrated. If you want your water chilled, it's easy to stuff ice into the wide mouth, and measurements along the side come in handy when you're cooking at camp or filtering water in the backcountry.