From Narumiya Official: These are long pants with a warm, fleece-lined interior. They have high stretch for a comfortable fit and a straight silhouette with frills that makes your legs look sleek. This is an excellent item that combines functionality and design. The waist is fully elasticated for easy on and off. Features moisture-absorbing and heat-generating properties. Includes a tag inside to write your name. [Recommended season: Fall/Winter] [Transparency] Opaque [Fabric thickness] Regular [Elasticity] Yes [Lining] None [Pockets] None [Adjuster] Yes Materials: Black_Main body: 56% cotton, 41% acrylic, 3% polyurethane; Black_Frill: 90% polyester, 10% polyurethane; Gray_Main body: 66% polyester, 30% cotton, 4% polyurethane; Gray_Frill: 90% polyester, 10% polyurethane