I keep a varied stock of this durable fabric.  It is a breathable (like cotton) acrylic fabric that is water, fade, mold, mildew, and stain resistant.  It's suggested for rugged outdoor use, as especially for prolonged exposure to the strong, hot sun.

This fade/moisture-resistant fabric is considerably higher in price than the 100% cotton standard fabric.  For a working service dog vest made of this fabric, please add $10.00 to the base vest price.

Please note, this fabric only comes in solid colors,
not limited to what is shown here.
If you have a specific color in mind, please ask and I'll check availability.
Fade/Moisture-resistant Fabric
Royal Blue
Service Dog Vests
Mary's Stitchery & Crafts