Filling the triangle with about 20 pounds of weight held my tent rock solid through a windy night on loose ground where stakes were useless. Way easier than fighting with pegs.
Alexander U.★★★★★
Pitched my tent on hard-packed gravel where stakes just bent, so I filled these triangles with rocks instead and they held through a windy night. The 20-pound capacity is no joke—once filled, nothing moved.
John Z.★★★★☆
Took these to a rocky site where stakes just bent and wouldn't go in, and the triangle bags held my tent fine once I loaded them with about 20 pounds of weight. Only gripe is you have to hunt for rocks or sand to fill them, so they're not much use on bare hard ground.