Our small but mighty customer service team has years of cushion and foam expertise to help you measure, select foam or fabrics, or to provide guidance for any order.
Monday–Friday: 9am–5pm PacificClosed Saturday, Sunday
Or, set up a personal design/measuring appointment at a time that works for you!
Dimensions will be rounded to the nearest 1/8"3 mm1/8" (3 mm).
Find out how to properly measure and order your foam.
Enter dimensions in the boxes, then click the “Show Prices” button.
This trapezoid shape has a back that is parallel to its front. The left side and the right side are of unequal length, and neither side forms a right angle with the front or back. If your cushion more closely resembles one of the similar shapes below, please click on it to use that shape instead:
The Foam Store of Marin
Foam Learning Center
Product Certifications & Safety Data Sheets
Foam and Your Health