With their loose and relaxed fit, the best boyfriend jeans are the epitome of comfort and slouchy, casual style. The best pairs are relaxed through the hip and leg, without too much excess fabric to totally swallow you up. When you’re looking for your perfect boyfriend jeans, there are some different aesthetic choices to consider. Boyfriend jeans come in many different washes, and a lighter wash may look even more casual. For the ultimate laid-back look, keep an eye out for distressed detailing, ranging from just a few small slits in the knees to denim that looks truly worn to bits. For a more polished vibe, look for a darker wash. Boyfriend jeans also come in more unusual washes, like solid white or two-tone — choosing the right wash for your style is truly about personal preference. Denim is made from cotton (which doesn't have much stretch), but if you want your boyfriend jeans to have a bit more of stretch, look for a pair that’s blended with spandex (aka Lycra, aka elastane)....