MORE STABLE IN WIND: Fill this patio umbrella weight bag with sand, adjust it around any umbrella base and enjoy greater peace of mind in windy conditions.ERGONOMIC AND USER-FRIENDLY: Features a side opening that allows you to easily position this weight on any umbrella base (no need to carry/lift when full). Wider opening for easy and mess-free filling.NO CRACKS OR TEAR: Unlike water-filled umbrella bases that can crack, this weight bag is strong and durable.WEATHER-RESISTANT: The material is water-repellent and resistant to sun and heat. It also withstands freezing temperatures and frost without cracking. Use this weight all year round. Note: The data are all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.