Nalgene On-The-Fly Kids Water Bottle Sustain Purple, with Sprout Cap, 12 oz. Simpson 5ml portions in a practical

5ml portions in a practical 50-pack format

It folds for storage and adjusts to user height

easy-to-clean vinyl upholstery

Revolving Torso Buckles adjust harness fit with ease and speed

Nalgene On-The-Fly Kids Water Bottle Sustain Purple, with Sprout Cap, 12 oz. Simpson 5ml portions in a practicalFor 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