{"product_id":"grade-6a-mulberry-silk-comforter","title":"Heartcosy Grade 6A Mulberry Silk Comforter – Organic Cotton Shell, All-Season","description":"\u003cp\u003eThe benchmark for silk comforters — built to a standard, not a price point.\u003c\/p\u003e\n\u003cp\u003eAt $289.99, this is Heartcosy's flagship silk comforter. The \u003cbr\u003epremium pricing reflects two choices that most silk duvets at \u003cbr\u003ethis level don't make simultaneously: Grade 6A mulberry silk fill \u003cbr\u003eand a certified organic cotton shell. Both materials. No compromise.\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003eThe fill: Grade 6A Mulberry Silk\u003c\/p\u003e\n\u003cp\u003eGrade 6A is the highest commercially graded mulberry silk —\u003cbr\u003eassessed for fiber length, luster, strength, and cleanliness.\u003c\/p\u003e\n\u003cp\u003eWhat this means in practice:\u003cbr\u003e· Longer, more continuous fibers that resist clumping\u003cbr\u003e· Higher natural luster — the fill looks and feels richer\u003cbr\u003e· Greater tensile strength — the fill holds its structure \u003cbr\u003e  over years, not just months\u003cbr\u003e· Naturally breathable fiber structure that adapts to body \u003cbr\u003e  temperature across seasons\u003c\/p\u003e\n\u003cp\u003eFill weight: [Confirm: e.g. 1800g King \/ 1500g Queen]\u003cbr\u003eSuitable for: [Confirm season weight — all-season \/ winter]\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003eThe shell: Organic Cotton\u003c\/p\u003e\n\u003cp\u003eShell: 100% organic cotton — [confirm: Australian long-staple \u003cbr\u003e       cotton \/ GOTS certified if applicable]\u003c\/p\u003e\n\u003cp\u003eLong-staple cotton produces a finer, smoother yarn than \u003cbr\u003estandard cotton. The result is a shell that feels substantial \u003cbr\u003ewithout being stiff — and holds up to long-term use without \u003cbr\u003epilling or thinning.\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003eCertification\u003c\/p\u003e\n\u003cp\u003e[If OEKO-TEX Standard 100 confirmed:]\u003cbr\u003eOEKO-TEX Standard 100 certified — both fill and shell \u003cbr\u003eindependently tested and verified free from harmful substances.\u003cbr\u003eCertificate number: [insert if available]\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003eTemperature regulation\u003c\/p\u003e\n\u003cp\u003eSilk's natural fiber structure — approximately 38% air void \u003cbr\u003eby volume — allows heat and moisture to move through the fill \u003cbr\u003erather than building up underneath. The duvet responds to your \u003cbr\u003ebody temperature rather than maintaining a fixed warmth level.\u003c\/p\u003e\n\u003cp\u003eWarmer in winter when your body needs insulation.\u003cbr\u003eCooler in summer when it needs ventilation.\u003cbr\u003eThe same duvet, adapting to both.\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003eConstruction\u003c\/p\u003e\n\u003cp\u003e· [Confirm fill layering method — hand-stretched \/ machine-layered]\u003cbr\u003e· Anchor stitching — fill stays evenly distributed after washing\u003cbr\u003e· [Confirm: duvet loops \/ security ties at corners]\u003cbr\u003e· [Confirm: silk inspection window if present]\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003eCare\u003c\/p\u003e\n\u003cp\u003e· Recommended: dry clean\u003cbr\u003e· If hand washing: cool water, gentle silk detergent, \u003cbr\u003e  do not wring or twist\u003cbr\u003e· Air dry flat in shade — do not tumble dry\u003cbr\u003e· Use a duvet cover to protect the fill and extend product life\u003cbr\u003e· Store in breathable cotton bag — avoid plastic compression bags\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003eAvailable sizes: Twin · Full\/Queen · King\u003c\/p\u003e\n\u003cp\u003eSelect your size above.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0550\/9437\/8539\/files\/28_a6198c74-a270-4a2f-aff6-f5d16df78116.jpg?v=1779634621\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0550\/9437\/8539\/files\/34_5e9f93dc-f83b-4ab1-802d-8f02e2bc9a07.jpg?v=1779634621\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0550\/9437\/8539\/files\/35_ab94f6b2-2002-48b3-a98e-2ae587e95043.jpg?v=1779634621\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0550\/9437\/8539\/files\/31_d56a7b0e-d8b5-4c8c-ad90-221653ad48fc.jpg?v=1779634621\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0550\/9437\/8539\/files\/26_a9e0d7a0-7734-4542-a8ff-7901f185ea92.jpg?v=1779634622\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0550\/9437\/8539\/files\/33_e7f572f4-58cb-41b9-adb5-7b0bc8069932.jpg?v=1779634621\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0550\/9437\/8539\/files\/29_4afeca0b-670d-442f-95db-61d8bf9d0741.jpg?v=1779634621\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Heartcosy","offers":[{"title":"White \/ 59\"x 79\" \/ Silk Fill:1.1 lbs | Total Weight:3.3 lbs","offer_id":42455219208235,"sku":null,"price":289.99,"currency_code":"USD","in_stock":true},{"title":"White \/ 59\"x 79\" \/ Silk Fill:2.2 lbs | Total Weight:4.4 lbs","offer_id":42455219241003,"sku":null,"price":389.99,"currency_code":"USD","in_stock":true},{"title":"White \/ 59\"x 79\" \/ Silk Fill:3.3 lbs | Total Weight:5.5 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