Keep2Go tubes are small multi-purpose travel tube containers. There are literally dozens of different applications for them, many of which are shown on the manufacturer’s website. The plastic Keep2Go tubes include a loop-cap which can be used with carabiners and lanyards to attach them to your gear.
At $3-5 each Keep2Go tubes are a bit costly, but we have yet to find a decent source to buy them in bulk.
Keep2Go Basic 5pc Set via Amazon
Product Info via BlueDesert
They look like soda bottle blanks with a fancy cap, Google “baby soda bottle”
That’s a good point. I had actually intended to mention the baby soda bottles later this week. The difference between those bottles and these is mainly the cap. While the bottle itself might be different as well, the caps open up so many more carrying options. Such loop caps are available separately, but from what I’ve found they usually cost as much as a Keep2Go tube + cap.