These are finishing kits for several of my published projects such as Martha's Rose and the Christmas Baubles/Garland Ornament series.
Each kit has die cuts of heavy card, thin card, and three batt of either 2", 3" or 4" size to make assembling the stitched piece with your own backing faster. You don't have to find the right materials.
Martha's Rose uses a 3" set. The 2023 Christmas Baubles and 2024 Christmas Garland ornaments use the 4" set. If you purchase a 2024 Christmas Garland kit, the 4" finishing set comes with it