<https://www.gettysburgflag.com/storm-flag-warning-set>
<http://schema.org/description>
" Our marine flags are made of durable 100% nylon fabric. These flags feature sewn or embroidered detail, and where applicable,  sewn stripes with a heavy canvas heading and brass grommets.  Set of 4 Gale & Hurricane flags (2 of each per set) Choose either an 18x18\" or 36x36\" set *Pennant size: 18x36\" (in 18\" set) and 36x72\" (in 36\" set) Durable All-Weather Nylon Sewn, single-reverse with four rows reinforced stitching for durability Canvas header & brass grommet attachment Made in USA        "
<https://www.gettysburgflag.com/flags-banners/storm-flag-warning-set>