Material Composition: Flannel (100% Polyester Fiber) ♥ Uses fluffy and soft brushed material, providing a gentle and soft touch & thick enough to keep you warm and comfortable in the cold season. ♥ Recommended not only as pajamas, but also as room wear and loungewear for cold protection. Size Guide: Length 100 Bust 144 Sleeve Length 71 The softness increases with each wash, and the quality of the material improves the longer you wear it.