Thank you for viewing. These are climbing jogger pants from KRIFF MAYER, made of lightweight and highly insulating knit fleece material. - Color: Black - Material: Knit Fleece - Features: Adjustable waist belt - Size: L - Pockets: Back pocket included Quoted from the following site: The inside of the hem is made with brushed tricot to prevent it from becoming too thick, maintaining warmth while reducing bulk. The silhouette is relaxed around the waist and tapers from the knees down, making it easy to move in while still looking slim. The material is treated with anti-pilling and anti-static processing to alleviate concerns during wear. The waist and pocket openings are switched to thin twill, which prevents pilling and adds a high-quality, subtle accent. This is a recommended item that is suitable for both outdoor and town use. I purchased these, but the size didn't fit, so I only tried them on and have been storing them at home. They are definitely warm! Please understand that these have been stored at home and are in used condition. *Please note that the measurements in the photos are approximate and taken by a non-professional.