Small Fits Waist Circum. 27.5 -31.75 (when Sizing Measure Around The Middle Of The Waist) Provides Pain Relief And Compression For Muscle Injuries And General Lower Back Dysfunctions; Injuries To The Lumbar Discs And The Sacro-illiac Joint 2 Flexible Internal Stabilizers Elastic Side Straps For Custom Compression Breathable And Moisture Wicking Color: Beige