Outdoor Fabric Central promises projects-ready fabric kits with all the things you want to reupholster backyard stools
https://local.yahoo.com/info-169556984-Outdoor-Fabric-Central%3Bp%3DOutdoor%2BFabric%2BCentral%26ei%3DUTF-8%26selectedId%3D169556984/
Outdoor Fabric Central offers projects-ready fabric kits with everything you need to reupholster outdoor stools and benches.