I got these because my boxers were losing their elastic and I have lost weight.  As a result, it was suggested that I try trunks like this so that I don't get "binding" but still get support.  Right out of the pack, I would say that these are a bit on the small/tight side but they feel comfortable after a first wash.  Eliminates all "support" problems and feel great.

I am giving this only 4 stars instead of 5 stars because I feel that these are a bit pricey, they are cut a bit small, and I am not certain how long the elastic will wear.