This is a THE NORTH FACE base layer set (top and bottom). NU61500 Expedition Hot Crew Retail price: ¥11,000 NU61501 Expedition Hot Trousers Retail price: ¥11,000 Both top and bottom are size M. I am selling these because I purchased something else. Instant purchase is OK. Quoted from the following site: This is a warm base layer that can withstand the cold of extremely cold regions, with a long-pile brushed fabric on the skin side. The material, which is a blend of wool, uses far infrared rays to warm the body with its Photoelectron R specification. It is also characterized by its high stretchability, which fits snugly to the body and does not let heat escape, nor does it impair mobility. [Fabric] Expedition Weight Photoelectron R (60% acrylic, 26% nylon, 12% wool, 2% polyurethane) [Country of Origin] Japan [Color] Gray This is a used item. Please refrain from purchasing if you are concerned about minor details.