Blog Anchors Aweigh! Grain in Bulk: Safety Standards Heavy Grain Boston Heavy Grain Whole Grains at Boston Public Market The Whole Grains Council Boston Materials announces new headquarters to support increased. Heavy grain leather construction Dual top handles with buckle details Gold tone hardware Main zip closure Structured bowler silhouette Spacious main compartment Signature Mulberry tree logo The Mulberry Boston Heavy Grain delivers timeless elegance with structured sophistication and everyday functionality. Crafted from premium heavy grain leather in classic black, featuring dual top handles and signature gold tone hardware throughout. The structured silhouette and spacious interior create the perfect balance of luxury craftsmanship and practical design.