The FANGNISN 90 * 90 inch Hot Tub Pad is a versatile outdoor spa accessory designed to protect your flooring from water, friction, and noise. Crafted from durable felt with a waterproof PE coating, this inflatable hot tub mat is absorbent and slip-proof, ensuring safety and convenience. Ideal for both indoor and outdoor use, it accommodates round or square hot tubs up to 90 inches in diameter. Easy to clean and store, this mat is perfect for hot tubs, pools, barbecues, and car repairs, making it a practical addition to your outdoor living space. Q1: What are the functions of the top felt layer and bottom PE layer on this hot tub mat? A1: The felt surface absorbs water and oil to keep floors dry. The PE backing is wear-resistant, tear-proof and non-slip to avoid sliding and liquid leakage. Q2: How does this mat protect my floor under the hot tub? A2: It reduces friction noise between the tub and floor, blocks moisture, and catches splashed water to prevent floor damage, even on wooden floors. Q3: Can I use this mat outside besides under a hot tub? A3: Yes. It works for pools and barbecue areas, keeping mud away from your hot tub or pool and blocking water and oil penetration. Q4: How do I clean and store this hot tub protection mat? A4: No frequent washing required. Simply wipe stains with soapy water. It can be folded neatly to save storage space when unused. Q5: What size hot tub fits this mat? A5: The mat has an 80-inch diameter and fits round or square hot tubs up to 90 inches across. Q6: Does the package include an inflatable hot tub? A6: The package only contains 1 hot tub mat. The inflatable hot tub is not included.