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For best results, please review and follow the full care and application instructions included with your order and available on our FAQ page here.

Sizing

• Rectangular bumper stickers are approximately 8.5 × 2.5 inches.
• Die-cut stickers and magnets are typically 3–4 inches.
• Sizing may vary slightly, especially on hand-cut magnet materials.
• Mockup images are not to scale and may appear larger for visibility.

Materials

• Made with premium all-weather vinyl.
• Stickers are waterproof, smudge-proof, fade-resistant and car-wash safe when properly applied.
• Designed for outdoor use on smooth, clean, glossy surfaces.
• Apocalypse-resistant, within reason.

Magnets

• Standard magnets are 20 mil thick.
• 30 mil extra-thick magnets are available and recommended for colder climates.
• Magnets only stick to magnetic metal surfaces.
• Many modern bumpers are plastic, so please test your vehicle before ordering.
• Try your trunk, doors or side panels if your bumper is not magnetic.

Basic Care & Application

• Apply only to a clean, dry, smooth, glossy surface.
• Clean the surface thoroughly before applying and allow it to dry completely.
• Avoid textured, plastic, rubberized, dirty, dusty, waxy or low-surface-energy surfaces.
• For best results, apply in mild temperatures and press firmly across the full design.
• Do not apply below 45°F.
• Wait 24–48 hours before washing your car after applying a sticker so the adhesive can bond.
• Remove magnets before car washes or extreme weather, including snow and high winds.
• Clean beneath magnets periodically to prevent trapped dirt or debris from affecting your paint.

Important Surface Disclaimer

Frog Mustard products work best on glossy, smooth, clean and dry surfaces. Many coolers, kayaks, vehicle cladding and similar items are made with low-surface-energy plastics, which can make it difficult for adhesives to bond—even when using premium vinyl.

We cannot offer refunds for poor application, failed adhesion on textured, plastic, dirty or otherwise incompatible surfaces, or magnet incompatibility with non-magnetic vehicle panels. Please message us before applying or purchasing if you are unsure whether your surface is compatible.