Feature : The latest innovative technology eco-friendly material, almost 100% closed cell high functionality pe foam. Non-toxic : free of formamide, phas, dehp, heavy metals, smell free. Anti-slip on both sides, shock-absorbing surface reduces impact and noise. Waterproof, antibacterial, easy to clean and washable. Only half the weight of eva material, more easy do-it-yourself installation and storage. Specification : Dimension : 60cm*60cm*2cm (±3%) Color : blue / green / yellow / orange Package : 4 pieces / set Material : pe foam (electronic bridging process) Application : indoor Origin : made in taiwan