Custom Window Seat Cushions

Window seat and bay window cushions cut to your exact measurements, with angled, L-shaped and T-shaped options.

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Custom bay window seat cushion with angled ends in natural linen-look fabric

A window seat is usually built in, so a store-bought cushion rarely fits. We make custom window seat cushions to the exact length and depth of your seat, whether it is a straight seat under a window, a bay window with angled ends, or a corner nook.

Start with the window seat cushion builder for straight and bay seats. For angled ends, choose a tapered cushion; for corner and wraparound seats, an L-shaped cushion or a T-shaped cushion. Finish the nook with bolsters at each end and throw pillows against the glass.

Pick Sunbrella for a seat that gets strong sun, or Warwick, velvet and faux leather for a cozier reading corner. Choose your foam and finishing, such as piping and a zippered cover, and the price updates as you go. In-stock fabrics ship in about 2 weeks and other fabrics in about 4 weeks, with free shipping.

Building a bench instead? See custom bench cushions, or browse all custom cushions.

Window Seat Cushion FAQs

Find quick answers to common questions about our products, services, and project support.

How do I measure a window seat cushion? + −

Measure the seat itself, not an old cushion: the length from wall to wall or end to end, and the depth from the wall to the front edge. If the seat sits in a bay with angled ends, also measure the back length along the wall. Enter the measurements in the builder and choose the matching shape.

Can you make a cushion for a bay window with angled ends? + −

Yes. Choose a tapered (trapezoid) shape for a seat with angled ends, or an L-shaped or T-shaped cushion for corner and bay seats. We cut it to the front and back lengths you give us.

How thick should a window seat cushion be? + −

Most window seats take a 2 to 4 inch cushion. Thinner cushions keep the seat height comfortable under a low window; thicker ones feel more like a reading nook. The builder shows the price for each thickness.

Which fabric is best for a sunny window seat? + −

For a seat in strong sun, choose Sunbrella, which is solution-dyed and holds its color. Warwick fabrics and velvets suit window seats with less direct sun.

How long does a custom window seat cushion take? + −

Cushions in in-stock fabrics ship in about 2 weeks, and other fabrics in about 4 weeks, with free shipping.