These are pants from X-Girl Stages. They are made of sweat fabric. The inside is brushed fleece, but it's not overly thick. They haven't been worn many times. However, there seems to be some fading due to washing, which is common with black clothing. Personally, I don't mind it. Please refrain from purchasing if you are sensitive to this or are very particular. These are used items, so please only purchase if you understand this. They will be compressed for shipping.