Nalgene On-The-Fly Kids Water Bottle Sustain Purple, with Sprout Cap, 12 oz.

For our adventuring prodigies, there's the Kids OTF. It features everything that's made its grown-up version wildly popular (one-handed opening, leak-proof design, durability, odor resistance), but its 12-ounce/ 355 ml size is more manageable for little hands and thirsts. It's carabineer friendly, too, so hook it to their backpack or your daypack, and get out there. The vibrant purple finish with Sprout Cap adds a fun, nature-inspired touch that kids love.