Gsteelwrote a review of Saxx Blacksheep Boxer Brief + Fly - Men's on July 13, 2019
Familiarity: I've used it several times
Fit: True to size
These are great boxers and the wool/fit is very comfortable. I would highly recommend them for every day or medium exertion . However, I would not recommend them for high endurance activities that generate a lot of sweat, as they hold water and will become extremely heavy and saturated. Merino wool may be good for pulling water off the body and remediation of odors, but it holds onto the moisture and you end up with a super saturated pair of drawers. I generally run in Exofficio give-n-go boxers, which work great. When I ran in the Saxx, I felt like I had a wet wash rag around my waist afterwards. The same would apply for wet wading if you are doing summer water sports.