4 Pack Foam Board 30"x40", 0.23 Inch Thickness Poster Board, Double-Sided Acid-Free Foam Core Board, Large Lightweight Polystyrene Board for Painting, Display, Craft & School Projects, Black

6MM Hardy Core & Edge Protection (with
Protective Corners): The 6MM dense foam core provides sturdy reinforcement for art projects, presentations, and crafts, preventing any bending or warping. Every pack comes with plastic corner covers and shock-resistant design, curtailing any potential shipping edge damage and overcoming the issue of "boards damaged upon arrival".
Dual-Sided Smooth & Leak-Resistant Surface: The foam board boasts a fray-free, dual-sided smooth texture that averts any penetration from paint, markers, or adhesive. It pairs seamlessly with water-based pigments, acrylics, and glues, eradicating any concerns of uneven coloration or paper shredding due to leakage. Acid-Free Substance for
Extended Preservation: The double-sided foam board is acid-free (including the polystyrene foam and outer paper), counteracting surrounding acid components, thus preventing artworks or photographs from changing to a yellow tone or bit by bit losing color saturation. It's perfect for archive storage or long-lasting exhibits. Light Yet Firm & Easy to
Cut Precisely: The foam core board is lightweight, making it easy to transport (for school or on-site usage), yet its firm construct ensures it remains level. It can be smoothly cut using a standard utility cutter (leaving no rough edges) to create customized sizes or shapeseffectively addressing issues related to transportation of heavy boards or customization. Universal for Multi-Scenario
Usage (4-Pack Value): The standard 30"x40" size caters to a wide range of requirements: academic projects, workplace presentations, home DIYs, cosplay accessories, and exhibit displays. The 4-pack of white poster board offers an ample quantity for prolonged projects, reducing the need for recurrent reordering and saving your valuable time