Comfortable, cute, accurate measurements.
The only downside is that what they're calling a "soft o-ring" is in fact just a piece of elastic sewn into the pouch. This might work all right if you're skinny, but this ftm daddy's got some thunder thighs, and it really doesn't feel secure. It didn't fall out or anything quite so catastrophic, but it definitely did move around quite a lot until it ended up a bit sideways, almost. If you're chubbier, I might try their STP packer as it comes with a proper o-ring and might do a better job holding your silicone junk in place.
I have been using this packing jockstrap, boxers. Both are comfortable. Even good for packing. I can still use it after bottom surgery. Thank you Axolom for making these wonderful packing gears for us.