Taud below to effectively protect your shell during road transport. Manufacturing in Polyèster PU 600 D fabrics. Taud / Cover / Bache from below to effectively protect your 420 shell during road transport. Manufacturing in Polyèster PU 600 D fabrics. Grey color. Ex2048 - 420 Bottom Cover Windesign Sailing DESCRIPTION 420 Bottom Cover, Made of Strong, Yet Flexible, 600d Polyester PU Coated. Color: Gray.