Navy Dresses & Windsor Navy Midi Dresses at M&S Sabre V Neck Dress in Navy Linen, V Neckline, Puff Sleeve, A Line Square Neckline Navy Midi Dress All Dresses Red Dress. Effortless elegance meets versatility in this navy viscose mid sleeve dress. The flattering V neckline and relaxed fit make it a wardrobe essential for transitional seasons. Layer with a jacket and boots for a polished, put together look that works from day to night. Soft viscose fabric drapes beautifully and feels comfortable all day long. Viscose V Neck Mid Sleeve Pockets Tie on Sleeve Detail