Hi, do you make squabs for window seats, or do you only repair?

If you do, can you quote on the following:
2440 x 720 x 100 squab for an indoor window seat.
I'd like the foam to be couch quality, 100mm
And the fabric to be a light tan colour, something that is hard wearing as its in a window and will have kids climb on it. A fabric I've looked at elsewhere was the Warwick Copeland Marl but I'm not set on that, it could be something similar.
Cheers
Kelli