When buying underwear, I think we should pay attention to these points:
1. Size Size size, because underwear is a private article, no one can be returned, so it is necessary to consult a good size. (Especially for those with large waists, thin legs and thick buttocks, you must consult well to be durable, breathable and cost-effective? How should summer men's underwear be picked?)
2. Wear the right fabrics in the right season, such as those with good thermal insulation in winter (cotton, even blended wool), and heat-permeable and breathable materials in summer (firstly ice silk, then Modal)
3. Pay attention to changing and washing every day. If possible, you can soak in disinfecting water. Renew it regularly and keep it for 3 or 4 months. I think it will be fine (of course, it is not the case that you wear it every day).