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Industry standards classify silk fabrics of 22 momme and above as heavyweight silk. With higher gram weight and a thicker structure, they deliver significantly better durability and drape than lightweight alternatives.
Common heavyweight specifications include 25, 30 and 40 momme: 25 momme works for transitional blouses, wide-leg trousers and premium pillowcases; 30 momme is used for blazers, trench coats and bedding sets; 40 momme is an ultra-premium grade reserved for couture and luxury home textiles. Cost rises linearly with momme weight, so product pricing must target high-end consumer segments accordingly.
Merchandising advice for B2B clients: position heavyweight silk as profit-driving and hero SKUs for quality-focused mature customers. Emphasize core benefits such as thickness, durability, opacity and superior drape to create clear price and positioning differentiation from lightweight silk lines.