While these pants seem to be of good quality, they certainly aren't as advertised.  I purchased two pairs of them thinking they were made of heavyweight material, since that's what the product description says.  However, they are very lightweight and aren't good for anything other than sitting around the house.  I'll keep them just for that purpose but I am disappointed that I can't use them to go running in the cold weather (what I'd originally purchased them for).  I wish I'd have read the reviews before buying these, as others have made the exact same complaint.  The product description should be updated to say that they are lightweight.  Otherwise, it's very misleading.