The product that came was not a boyshort pantie, it looks like a regular brief (the package says boyshorts but the product inside the package wasn't) I believe the size is mislabeled as well, I bought a package of shorties also and they came just right (there is about 2-3 cm difference between the briefs and the shorties, even though they are supposed to be the same size)
The quality is good but it may be safer to buy from a store.