317lb Black Heavy Duty Base Weights Stand, 4 - Piece Offset Cantilever Umbrella Base, Ideal for Patio in Courtyard Pool Zone

‌【Superior Load Capacity & Stability】Three filling modes: 282 lbs with water, 353 lbs with wet sand, 318 lbs with dry sand. 317 lbs nominal load matches 8-10 ft cantilever umbrellas. Four-piece design ensures even weight distribution, resisting strong winds and preventing umbrella tipping. 【Weather-Resistant Material for Longevity】Made of HDPE polymer material, UV-protected and weather-resistant, preventing aging or cracking under prolonged outdoor use. Sealed filling structure eliminates leakage, extending base lifespan by over 30%. 【Precise Fit & Tool-Free Installation】Each base measures 19.5×19.5×3.9 in, perfectly fitting standard 8-10 ft cantilever umbrella poles. Tool-free assembly allows setup in 5 minutes, ideal for novice users. 【Ergonomic Design for Portability】Built-in ergonomic handles for easy carrying before filling. Threaded sealed openings prevent water/sand leakage. Stackable design for space-saving storage in yards or garages. 【Multi-Scene Versatility & Cost-Effectiveness】Suitable for patios, poolside, decks, lawns, etc., with temperature-resistant material for diverse climates. 20% price advantage over similar 317 lbs bases, backed by 1-year warranty.