If i was a 40 inch waist should i go extra large or large?
You can choose the size Large according to size chart. Thanks.
How should you wash them?
Support gentle machine wash and tumble dry with low heat and it wont shrinking and fade
What is the pouch difference between general and Separatec?
General Mens underwear: Constantly adjust the boys, Nested in constraint, Get sticky and itchy; SEPARATEC Mens underwear: Independent roomy space, Always stay in place, Stay fresh and no rubbing