Material: Surface layer: 92.3% polyacetate, 7.7% elastane Inner layer: 84.3% polycool fiber, 7.5% dipped fiber, 4 .8% spandex, 2.4% sheep's wool, 1% mulberry silk This thermal underwear is a very tight-fitting thermal underwear that makes your silhouette more beautiful. Thermal underwear is due to extremely stretchy due to its elastic properties. So you can feel comfortable all day long, even on the go. Perfect for everyday use, dates, parties, work, shopping and other occasions You can wear your new favorite pieces with almost anyone Wear occasion. For example, go for a walk or to the cinema. Whether at home or on the go - you will feel comfortable in this thermal underwear! Note: Please check the size when purchasing to avoid that you buy a product that doesn't suit you. Thank you for your cooperation. Note: If you smell a strange smell after receiving the product, please put the product in a ventilated place for a while to allow the smell to dissipate. This has no influence on usage. Please understand.