Thank you for viewing. This is a popular brand, Descente, with the product numbers DTM-3912 (jacket) and DTM-3912P (pants). It features a tricot lining and uses EKS+THERMO (Explus Thermo), which is moisture-absorbing and heat-generating. These are thick windbreakers, not flimsy ones, and are sold as a set. "These windbreakers use Explus Micro, a material that achieves lightness and softness by densely weaving extremely fine fibers, while possessing high water resistance, water repellency, and waterproof performance comparable to ski wear, as well as excellent moisture absorption and breathability. The lining is mesh only on the upper back of the jacket and from the thighs to the upper crotch area of the pants. The rest of the areas are unlined. The jacket has ventilation on the back and a drawstring cord at the hem. The pants have an adjustable drawstring at the waist and a drawstring at the hem. There are a total of 4 pockets (without zippers): two on the sides of the jacket and two on the sides of the pants." This is how the items are described. As they are used, there is some wear and tear (some stains on the cuffs, slight damage, and some damage to the stitching - please check the images), but there are no noticeable major stains or tears. If you don't mind the minor details, they are still in good condition and can be worn for a long time. Would anyone like to wear them? We are looking forward to your purchase if you understand that these are used items and agree with the condition described. Thank you.