Secure Suction Cup Base: Equipped with strong suction cups on the bottom, these booster seats stay firmly in place, preventing slipping or sliding during use for a safe, stable seating experience. Versatile Hot Tub Upgrade: Perfectly suited for inflatable hot tubs, spas, or pools, these booster seats elevate your seating height, improve comfort, and can be used by adults of all sizes to enhance their relaxation experience. Stable and Waterproof PVC: Made from stable PVC material, the booster seats resist punctures, tears, and water damage, ensuring a long-lasting product ideal for repeated use in wet environments. Comfortable Support: Designed to provide enhanced spa and back support, these inflatable booster seats ensure adults relax comfortably in any hot tub or inflatable spa. The ergonomic design relieves pressure and promotes better posture. Compact and Portable: Measuring 16.5x15.8x6.7 inches, these lightweight PVC seats easily inflate, deflate, and fold for convenient storage and travel, making them perfect for pool parties or spa visits.