The Source Convertube is a simple product that works well, and makes hydration affordable too. Simply use the Convertube and one of the four adaptors on the bottle in your backpack to refill and replenish. It also comes with a smart Helix bite valve, as well as Dirt Shield Tech to keep your water or juice clean from any outside grit or dust.
Sizes of four different adaptors:
Sigg: 42 mm
Nalgene: 63 mm
Evian: 24 mm
Standard PET :28 mm
Total tube length: 94 cm
Inner tube length: 35 cm
The Source Convertube is a simple product that works well, and makes hydration affordable too. Simply use the Convertube and one of the four adaptors