The Cushion Zone in East Londonwill create or replace any shape of window seat cushion. We have a selection of super comfy fillings and fine upholstery fabrics. These are suitable for cushions in homes, offices and venues & we’re happy to give technical advice. The lovely photo, behind Horace, of window bench seat cushions with bolster style back cushions was sent by a happy customer who had sent us their own fabric.