Plus Size Strapless Tube Top Sundress. NWT. 18 Plus Material: This plus size tube dress is made of 100% viscose fiber, which is soft, lightweight, and breathable, making it suitable for summer. This plus size sundress also has a lining to ensure it isn't see-through. Strapless Dress Design: This plus size cover up features a lined, tube top design with a smocked top. Its A-line, layered, flowy design falls just below the knee, offering a loose and elegant look that is both smooth and airy without appearing bulky. Occasion: This plus size summer dress is perfect for hot weather, everyday wear, parties, vacations, dates, trips, and more. It can also serve as a bikini cover-up, ideal for beaches, vacations, swimming pools, sunbathing, and cruises. Pair it with sneakers, sandals, slippers, or even a denim jacket and cute boots for spring and fall.