"Foam-Lined"..."Carpet-Lined"...you've heard of these, but have you heard of "Maple-Lined?" How's about a ½"-thick stave Bubinga Shell lined with 8-plies of maple just to get it that much thicker! Then add 10 vents for maximum explosive volume, and you've got the gnarliest FreeFloater insert on the block! 3¾x14; solid stave bubinga + 8-ply maple; satin wax.