How to check the support area before buying
Compare the area that helps you with the overall space the cushion occupies.
Record both the footprint and top surface
The widest footprint tells you how much space the cushion occupies. The upper surface may narrow or curve. Check the photos for contours and ask the maker for top-surface measurements if the listing only shows overall dimensions.
Check each piece of a set independently
The Bedroom Bliss set lists two lengths and heights. First compare each piece to the space you have. Use the manufacturer’s directions for any arrangement involving both pieces. For more detail on wedge profiles, see the wedge profile guide.