Your umbrella will be secure with Umbrella Source's PRE-FILLED 50 lb. Concrete Umbrella Stand. This stand is pre-filled with 50 lbs of dried concrete and is for use with 7.5' to 9' umbrellas. The outer shell of this umbrella stand is durable and features a handle for ease of moving. This umbrella stand is recommended for use with table applications only and is not recommended for standalone use.