40mm

Slapped this on my phone right out of the box and the fit is snug without being a hassle to remove. The 40mm build feels solid enough to trust on a daily commute, and it doesn't add any annoying bulk to my pocket.

The 40mm size is exactly what I needed for my daily setup, and it clicks into place with a satisfying solidity that makes me trust it won't budge. I've been carrying it for a week now and the durability is immediately obvious, even in my pocket with keys.

Fits snugly against my phone case without adding bulk, which is exactly what I needed for a daily driver. The build feels solid enough that I don’t worry about it snagging on pockets or bags.