The Surf Cushion is designed to fit your favorite portable work desk, The Surf by ECR4Kids (ELR-15810, sold separately). Offering 1.5" of foam padding to create a comfortable place to sit, no matter where you choose to work. The built-in non-slip sleeve is designed exclusively to fit the Surf Desk by simply sliding the cushion on to the seat pan. Providing flexible seating allows students to quickly and easily pair up, work in small groups, or discuss as a whole. The foam cushion is covered in a coated oxford fabric that is easy to clean by wiping down with a mild soap-and-water solution or your favorite bleach-free cleaning wipe. Spot clean as needed, do not rub or use abrasive cleaners; allow to air dry completely before next use. Rated GREENGUARD [GOLD] Certified for healthier indoor air, PVC-free, CPSIA lead and phthalate compliant and adheres to CA-117 requirements for fire retardancy. Constructed with certified flexible polyurethane foams that meet CertiPUR-US program standards. At ECR4Kids, we’re committed to safety, testing and regulatory compliance to ensure our products meet or exceed industry standards. You and your kids deserve the absolute best for a brighter way to play, share, learn and grow.