DURABLE CONSTRUCTION - Sonic welded for enhanced strength, ensuring long-lasting use. VERSATILE STORAGE - Ideal for organizing supplies, materials, and paper in any setting. STACKABLE & NESTABLE - Easily stack and nest the trays for compact storage when not in use. LIGHTWEIGHT & STURDY - Made from corrugated plastic, offering a perfect balance of portability and durability. ECO-FRIENDLY DESIGN - 100% recyclable, with cut-out carrying handles for convenient transport.