Aleene's Acrylic Matte Spray Sealer, 6 oz. - Walmart.com
Amazon.com: DecoArt ACRYLIC PATIO PAINT FAN FAVORITES SAMPLER SET, Assortment, 2 Fl Oz (Pack of 18)
Apple Barrel Outdoor Acrylic Craft Paint Set, 21 Piece Set Including 4 Foam Paint Brushes, 1 Mod Podge Outdoor Sealer, and 16 Apple Barrel Multi-Surface Paints - Walmart.com
Best Exterior Sealers for Your Outdoor Spaces - The Home Depot
Aleene's Original Glues - Aleenes Gloss Spray Acrylic Sealer
Krylon K18200007 Make It Last Clear Coat Sealer 6 Ounce - Spray Paints - Amazon.com