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Need made to measure triangle-shaped boxed seat cushions? With our bespoke service, you can create a custom cover with a choice of premium foam filling. Place an order over £25, and we'll deliver your cushion covers for free.


5% off when you spend £100 on covers

10% off when you spend over £200 on covers

15% off when you spend over £300 on covers

Discount will be applied once the products are added to the cart.

Foam grades and suitability:

FS Budget 33H Blue Foam - The Budget Blue Foam (Grade 33) is our most used high-density foam grade. It is a firm foam, widely used for dining pads, upholstery repairs, garden seating, window seats and caravan seating. For high-use items, please choose the Premium Blue foam instead.

FS Premium 39H Blue Firm Foam - Our Premium Blue Firm Foam (Grade 39) is a high-density foam, perfect for sofa seats if you are looking for a very firm cushion. It is also suitable for many other applications, including upholstery repairs, boat seating, caravan and campervan seating, window seats, dining pads and much more. 

FS40 Luxury Reflex Grey Foam - Our Luxury Reflex Grey Foam (Grade 40) is a premium high-density foam with a high resistance and a bounce-back touch. It’s medium feel foam, ideal for sofa seat replacements providing comfort and resistance.

FS 30 Premium Soft Blue Foam - Our Premium Soft Blue Foam (Grade 30) is a very soft foam, which in the upholstery trade is usually used for back cushions and this grade is also used for soft mattress toppers. Not recommended for any seating application!.

FS 6lb Recon Foam - Our 6lb Recon Foam is a very firm grade, used for hard-wearing seats. It’s ideal for bar seating and stools, church kneelers, gym mats and other hard-wearing commercial furniture.

Memory Foam - Our Memory Foam is a high quality foam, used to add extra comfort and support to any mattress. It can also be used for mattress toppers, pillows, wheelchair cushions and much more.

FS400 Luxury Reflex Pink Foam - Our Luxury Reflex Pink Foam is a premium high-density soft foam. This foam grade is a suitable choice for the replacement of sofa back cushions (which are fibre filled or foam filled).

FS24 White Foam - Our White Foam is a budget craft foam, that can be used for crafts projects, upholstery repairs, headboards and much more. Not suitable for sitting on!

Equilateral Triangle Box Seat Cushion Foam and Covers

With our fully bespoke boxed seat cushion cover and foam service, you can create made to measure triangle-shape cushions for any furniture.

You can choose from a great variety of fabrics for your cushions covers and add premium foam filling to enjoy greater comfort. Place your order today and we will handcraft your made to measure cushion covers in just 10 days.

How to order Made to Measure Triangle Box Seat Covers and Foam?

To order made to measure triangle box seat cover, pick a suitable fabric and shape and enter your required size. If your shape is not displayed, then select a Custom Shape.

When you pick a custom shape, you have the option to send us your existing cushion covers or carefully drawn templates. To ensure accurate pricing on Custom Shapes, measure widest point based upon width, length and depth of your cushion.

If you have a fabric you would want us to use for your bespoke cushions, then you are more than welcome to send us your own fabric. To find out more about this service:

  • Email us at info@foamsuperstore.co.uk
  • Or ring us on: 0191 2620769

You can also to add premium foam filling to your made to measure box seat cushions and choose a foam grade that perfectly matches your desired level of comfort.

Fabrics suitability:

Caravans and Campervans -  you can use all fabrics, except for the outdoor fabric range, are suitable for caravan and campervan cushions 

Home furniture - all our fabrics are suitable for home furniture cushion covers

Garden furniture - our Outdoor fabric range is perfect for garden and patio furniture. The faux leather range is also suitable, but covers must be stored away when not in use.

Boats - all our fabrics are suitable for boat furniture

What can our Made to measure boxed covers be used for?

  • Window Seats
  • Garden Furniture Seating
  • Sofa Seat Replacement
  • Boat Covers
  • Campervan Seating
  • Wheelchair Seating
  • Gym Mats
  • …and many more!
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