We love clean, fresh water but we know that isn't always a reality. The SteriPEN adventurer opti from Fontana Sports is a lightweight water purifier that is a must for outdoor enthusiasts! 

The revolutionary optical water sensor doubles as an integrated LED flashlight for added convenience on the trail or around the campsite: hold down the activation button for three seconds to illuminate the darkness.

Rugged design and construction trusted by thousands of endurance athletes. Adventurer Opti is powered by two CR123 batteries making it a lightweight water purification system and keeping it operating effectively in even cold environments. The long-lasting UV lamp provides purifies up to 8,000 liters! Works in containers with a minimum 1.75 inch diameter opening. (Like Nalgene wide-mouth bottles one liter bottles, not included.)

Click here to see the SteriPEN and its features!