12oz On-The-Fly Kids Lock-Top Bottle with Graphics (Graphic: Smash)

<p>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 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.</p>