Billabong Sleeveless Cover-Up Dress. The Billabong Sleeveless Cover-Up Dress for women is a breezy layer made for relaxed beachside style. Designed in a slightly sheer solid color fabric, this cover-up features a flowy silhouette that drapes comfortably over swimwear. A delicate bow detail at the neckline adds a feminine touch, while adjustable shoulder straps provide a customizable fit. Finished with a sleeveless design, side seam pockets for added convenience, and an approximate 30" length, this cover-up is perfect for slipping on after a swim or heading out for a casual coastal stroll. 61% Viscose 39% Modal. Machine wash. Imported.