The StandStrong Original comes in two sizes and fits on virtually any standard lifting belt.  The supportive elastic design can:
OVERLOAD training by allowing you to do more reps, sets, and heavier weight to gain strength 
EMPOWER you to to squat more by offering more support at the most difficult portion of the movement.
PROTECT you by reinforcing proper form and technique to help prevent injury 
[The StandStrong Original is currently sold out of the standard 4 inch size]