Great product I have multiple of these cases I keep them in multiple gear bags that may find themselves in austere environments.

I use alot of 16340's and this is an incredibly convenient way to carry spares with me.

Holds six 16340 batteries securely. Comes with a fitted foam insert under the cap. It's loose when there are no batteries but when the batteries are loaded, prevents them from moving thus creates a solid and stable housing. Fits all kinds of CR123A-sized batteries; protected or not. The plastic of the case is smoked so you can see the batteries inside. The case also comes with a lubed O-ring so the case should be waterproof. Overall, a great case for the adventurer who needs a dependable, durable, weatherproof case for batteries.

This is a well made and fair priced battery holder that will hold enough batteries securely and help you keep up with them.