Gray One-piece Korean Style Color: Gray Open Back Sleeveless Dress Purchased in Korea. I've included a photo of me wearing it. This dress features an open back, which is its highlight ♡ It looks simple from the front, but the back is open. The straps are adjustable, so you can wear it looser or tighter to achieve your desired style! You can also pair it with a T-shirt or a bralette depending on your mood. It's a versatile item that can be worn year-round: pair it with a sheer shirt for early autumn, or a cardigan for winter!