Full deck over-boom cover with heavy duty nylon zipper running from mast to shroud and flap that snaps over zipper to protect it from UV. Mast collar with draw cord closure. Flaps that snap around stays. 5/16 in shock cord in the hem. Large screen at the aft end for ventilation and vent over front deck. Reinforcements in back corners and around cleats and fairleads. Polyester duck. Gray. Made by Sailor's Tailor.