sturdy Oxidation Resistance: Made from synthetic felt paired with PE lamination, the mat provides excellent resistance to oxidation and wear, extending its lifespan even with regular outdoor or indoor use Soft Comfortable Cushion: Crafted with 2mm thick felt material, the mat provides a soft and cushioned feel underfoot, enhancing comfort when stepping in or out of the inflatable hot tub Non-slip Safety Grip: Featuring a premium felt surface combined with a PE laminated backing, this hot tub mat prevents slipping and resists liquid penetration, ensuring the surrounding area stays dry and safe during use Large Size Compatibility: Measuring 90 inches round, the mat fits most inflatable hot tubs perfectly, providing ample coverage to keep the hot tub area tidy and stable Versatile Waterproof Protection: Designed waterproof and suitable for both indoor and outdoor settings, this round 90-inch mat protects floors or patios from water and dirt while maintaining easy cleanup