Review on Boys' Clothing: Calvin Klein Performance Underwear Multipack by David Lesperance

I am not satisfied with the size of these boxers. The size chart says Big Boy Smalls are a size 8. My first order resulted in Little Boys (size 4). We were out camping for 3 months so tried to let him wear them until we ordered a replacement (bad decision - now he has a rash from undersized underwear and will be a commando until we get a replacement) . My second order was Big Boy Smalls - matching boxers and size S (6/7). You are too small for my child again. We need boxers that fit our kid and aren't cotton - why are they so hard to find?