foam primer and coat grey 250gr green stuff worldFlexible foam primer Flexible Foam Primer and Coat with excellent grip, highly durable, waterproof, and frost resistant. Ideal for crafts, cosplay, and scenery work. Works as a primer, sealer, or base coat, improving durability, impact resistance, surface texture, and paint adhesion. Seals porous surfaces such as EVA foam, Plastazote, Styrofoam, XPS, plastics, wood, stone, and more. Once dry, it creates a sandable surface for smooth finishes and