SteriPEN Adventurer Opti with Solar Charging Case Bundle Automatic Sizing is based on the

Sizing is based on the size of the ear's Helix Bowl

Safe - No combustible fuels

or rough conditions

you owe it to yourself to have the right cutting tool to make life outdoors more enjoyable

you just wonÂ’t find a better bottle on earth

SteriPEN Adventurer Opti with Solar Charging Case Bundle Automatic Sizing is based on theINTRODUCING THE LATEST ADVANCE IN OUTDOOR WATER PURIFICATION! Adventurer Opti Product Information: The smallest, lightest SteriPEN, the AdventurerOpti, uses a revolutionary optical eye to sense the water. The patent pending technology ensures safe use and provides purification in even the coldest of waters. The new optical sensor doubles as a convenient LED flashlight. Its a great backup light when camping or taking a night time walk to refill your