What is the best boxer brand?

Hi! I (f) want to buy some boxers for my bf to keep at my house just in case he under-packs when he comes over, or just to have some backup ones. He really likes these cooling ones from costco, but I don’t have a membership, so I would love to get him some cooling, hugging boxers (not the loose kind) so that he can still have comfortable back up pairs. what do you guys recommend/buy with that type of style?