It's actually quite nice. Batteries do not rattle, yet I'm not too worried about them being crushed. The O-ring is glow in the dark.
Those look like copies of the Pelican 1010 case, made here in the States. The 1010s are crush proof, waterproof, and dust proof. They also have a one-way air purge valve - perfect for lithium ion 18650 batteries. As far as I can recall, Pelican stuff carries a lifetime warranty.
I have four of these and have been using them for the past five years. Love them!
Those 14500 batteries in the case, in the background, would need some sort of spacer, or foam fill, for travel. I never travel with those batteries, so it hasn't been an issue, yet.
This foam-filled case, which snugly holds a dozen (R)CR1213 batteries, was the very first 1010 case I purchased. Picked it up from Battery Junction. The other cases were purchased, either at Fry's Electronics, or through Amazon. I bought it because the very first time I traveled with CR123 batteries, in their original Surefire cardboard box, the TSA agents mistook it for a box of bullets lol.
This picture is not representative of how you would pack one of these cases (You couldn't put four 26650s and all those 18650 batteries in the same case), but shows that it would allow for the storage of four 26650 batteries side-by-side, very nicely.
I've actually been carrying four (previously five) 18650 batteries and two 26650 batteries, in one of these 1010 cases, in my pack, for regular EDC use, which I use at work, or wherever I go, where I anticipate needing a lot of lights.