Made from the same materials used by professional climbing gyms across the country. Real sand texture provides sure gripping power. Solid 2-point anchoring prevents slipping. Can be used with most Swing-N-Slide climbing towers with a 48" or 60" deck height. Weight limit: 230 lb. Each kit includes: 4 (red, yellow, green, and blue) premium grade climbing holds (2 small, 2 large), all hardware required for easy installation, and fully illustrated step-by-step plans. Lifetime warranty. (Rocks only, platform not included). ASTM certified.