2. The side with trademark is the back.
3, try in comfort, wearing a straight tube is more comfortable than wearing boxer shorts.
Extended data:
Boxer pants are loose and breathable, which is more conducive to reproductive health and fertility. The principle is that testicles need a low temperature environment when making sperm, and boxers can let air circulate to achieve this condition; On the other hand, briefs increase the lower body temperature by pressing the genitals. However, this view has also been questioned. Most of the objections are that wearing briefs or boxers will not significantly lower the body temperature of the lower body, so the influence of underwear types on sperm can be ignored.
Reference: Baidu Encyclopedia-Boxers