Sturdy, fairly thick fleece material. The inside is a solid fabric, not just fleece. Blouson with zipper pockets for comfortable wear. High-quality, with a very smooth and pleasant lining. Fluffy and warm. Due to the material, the fluffiness is slightly flattened around the wrists, elbows, and back. There's some wear and tear, but it's a very warm outerwear. Warm even in mid-winter. Thank you for viewing.