The box cushion has a top, a bottom and four sides. The sides are called the boxing, and can be from 1 inch to 10 or more inches deep, depending on the overall size and use of the cushion. This banquette
has box cushions for both the seating and on top of it. Keep in mind that the seat cushion will flatten in half when you sit on it, so be generous with your measurements.Piping, also called welting, can add structure. This can be either in the same fabric, known as self-piping, or in a contrasting color. If you have other cushions in the room, link that color to your piping.The insert should be firm and enhance the structure of the cushion. Synthetic inserts, such as hypoallergenic polyester, are a smart choice for cushions that will suffer from wear and tear. Just as comfortable as feather-down inserts, they're also great substitutes if you're allergic to feathers.