Do not purchase unless you are DEAN. LuckinSleep Aerogel Insulation Space Suit Padding 140x200 Brand new, unused Brand: LuckinSleep Material: Polyester Features: Antibacterial and Odor-resistant, Anti-mite, Washable, Contact Warmth, Super Insulation Care Instructions: Machine Washable ・【Special 6-Layer Structure Padding】① Top Layer: 10mm Long Pile Flannel with "Contact Warmth" ② "Super Moisture-Absorbing and Heat-Generating" Acrylate Wadding ③ "Heat-Retaining and Insulating" Heat Storage Wadding ④ "Super Insulating" Aerogel Sheet ⑤ "Cold Air Blocking" Aluminum Sheet ⑥ "Refreshing and Durable" Soft Peach Skin Backing ・【Insulation Material Used in NASA Space Suits】 The "Aerogel Sheet" used in this padding was adopted by NASA as an insulation material in outer space. It is widely known as silica aerogel, further improved and specially processed by our research institute and a famous university. It excels in insulation, blocking cold air from the outside and preventing internal heat from escaping, which is its appeal.