Flannel Rags White Flannel-15x25 Size: Minimum Size of 15×25 inch Uniform. Making: Processed to make the rag extra absorbent. Stitched: All side stitched overlocked Packaging: Available in retail and bulk packing White Flannel-15x15 Size: Minimum Size of 15×15 inch Uniform. Making: Processed to make the rag extra absorbent. Stitched: All side stitched overlocked Packaging: Available in retail and bulk packing