Back Detail Side Slit Maxi Dress Black Long Sleeve Side Slit Maxi Dress for $59.99 The Dress Outlet Ribbed knit side slit maxi dress in black Self Portrait Mytheresa Black Long Sleeve Side Slit Maxi Dress for $59.99 The Dress Outlet. This sleeveless maxi dress features a bold abstract print set against a vibrant blue backdrop for a striking, artistic look. Designed with a flattering button front detail and an adjustable back tie, it offers an easy, flowing silhouette with thoughtful shaping. Side slits add movement and comfort, making it a standout yet wearable piece. Sleeveless design V neckline Button front detail Allover abstract print Adjustable back tie for a customizable fit Side slits for ease of movement Lightweight, breathable fabric Maxi length 100% Rayon