My husband and I were heading down to visit family where it gets a little colder than what he's used to. I bought him these thermals to wear under his jeans and they were great. They kept all the body heat inside and nobody could tell he was wearing them underneath. The jeans he wears are a pretty tight fit - they're not skin tight but they're skinny jeans, and they fit just fine over these thermals. They were exactly what we needed. They didn't shrink or bleed in the wash and they're so comfy that sometimes he even sleeps in them rather than finding pajama pants. Great purchase.