Limited Quantity: 6-Layer Construction with Aluminum Sheet - Winter - Moisture-Wicking, Heat-Generating & Heat-Retaining - Extra Thick Warm Single Shikipad - Antibacterial, Anti-Odor, Anti-Dust Mite, and Contact Warmth - Long Pile Flannel - LuckinSleep [Aerogel, the Insulation Material of Spacesuits] - Washable Shiki Pad, 100x200cm, Gray ‐ Mercari: Shop from Japan