Quarantine Flag, Nylon, Size: 12" x 18" These quarantine flags are available in 4 different sizes, from 12 in. X 18 in. To 24 in. X 36 in. , each flag is made of 100% heavyweight solarguard nylon, uv treated, sewn with a premium quality extra-strength polyester thread. Seams are double-stitched with back-stitch reinforcement and four rows of lock stitching on fly end, finished with a heavy white canvas heading and solid brass grommets. Flags are made in the u. S. A.