Usage Tips:EXTRA SAFETY. These umbrella base weight sandbags are truly robust and versatile. Use them as outdoor furniture weights and to keep drying racks / trampolines stable: or as door stoppers! UP TO 49 LB. You can fill each umbrella sandbag with sand, gravel, or stones (not water!) to make a patio umbrella weight of 49 lb (22 kg) and keep a cantilever umbrella base secure and in place. FOR ANY HARSH WEATHER. These umbrella weights for outside are made of tough water-repellent, UV-, anti-dirt material that withstands extreme temperatures: all-year-round sand bags for stands. LAST FOR YEARS. Each beach umbrella sandbag is made of high-density 600D reinforced fabric that doesn't tear or stretch. No plastic layers, so no molding or dampening inside the umbrella weight bags. SMART, USER-FRIENDLY DESIGN. Arch-shaped umbrella weights make a larger contact area. Carry the umbrella sandbag weights by the sturdy strap on each. Fill the umbrella sand bags easily thru large openings on both ends with ultra-dense, mess-free hook & loop fasteners. Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you! Quantity:4Pcs Colour:Black Material:canvas Package Contents: 4 * Outdoor Fillable Sandbags Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.