Cushionzone supply cushions to suit any garden furniture, even if it’s an unusual custom shape. We have a good range of water repellant fabrics,including sailcloth, canvases, marine grade vinyl, and Sunbrella, probably the best known outdoor fabric of all. We recommend foam inners for most outdoor cushions, we always include a Dacron wrap as standard, to give a slightly rounded appearance, and an additional water resistant layer. Fibre filling is fine, too, for a more puffy looking cushion. Fibre cushions don’t absorb water readily.
Some of our fabrics are so waterproof you could use them as a bucket - it’s the seams that can leak, and there’s no good way to stop this. Go for the economy box style where possible - fewer seams! Invest in nylon sailcloth economy box covers as inner liners if the area is very exposed - & your heart’s set on piped box covers!