Simple black long one shoulder slit mermaid prom dresses Artofit Long Mermaid Off the Shoulder Satin Red Formal Prom Dresses with Slit Satin Prom Dresses Mermaid Off The Shoulder With Slit LD Dress Women s satin prom dress with slit off the shoulder mermaid corset. This luxurious. mermaid style red prom dress is made of satin fabric with an off the shoulder cut and a long skirt slit. Perfect for standing out at any formal event. the sophisticated silhouette and bold color will ensure a memorable evening.