Most useless product and worse customer services I have ever experienced, the thermal's were of extremely low quality and size was too short and took numerous emails and over 6 months to get the refund via Amazon as seller was not interested.
My son is usually a small size, but these were way too snug. Too tight and too short on the leg. Material is good for the price though. As long as you're not too tall, I would suggest these will be okay if you order the next size up.
I would have given this product another star but they could do with more coverage from the crotch to the waste bend a little short but whats there keeps me good and warm while I am working Night Shift!