The deep V-neck design of the "Cache-Coeur-like Check one-piece" allows you to enjoy layering. When it's still chilly, pair it with a high-necked inner layer, and when it gets cooler, pair it with a T-shirt or tank top. If you combine it with a "cloth tank top," it will be a mature style that is not too casual, so you can enjoy it both on and off the job.