Stability booster for umbrellas This stabilizer adapter provides superior stability by securing the umbrella pole in place, greatly reducing the risk of tipping in gusty wind and improving outdoor safety. Special pole compatibility Exclusively designed for poles with diameters of 12.7 cm or 3.4 cm, it offers a tight fit that prevents unwanted movement or accidents during use. Weather resistant construction Made from PC and ABS materials, this stabilizer sleeve withstands extreme weather conditions including UV exposure and moisture, without compromising its integrity over time. Deck adapter and poolside versatility Whether on concrete, wood, or composite surfaces, this stabilizer adapts to different poolside settings to create inviting shaded areas perfect for relaxation. Use scenarios - Poolside windy day: attach the stabilizer to keep the umbrella steady while you enjoy the water or lounge nearby. - Patio shading on a concrete or wooden deck: secure the umbrella to form a stable, comfortable shade zone. - Poolside seating on composite surfaces: use the stabilizer to ensure a safe, steadied umbrella in outdoor lounges or dining areas.