POC Spine Protection * POC Spine VPD Vest offers great versatility and liberty of motion and you can wear it with or without the detachable waist. The back protector is made of VPD and offers a high level of defense in addition to an unique capability to adapt its shape to your body. All sizes are readily available in both slim and routine fit.? TECHNICAL FEATURES:-Medium (Fits Adults or your adults in between 5'5" and 6'-Low density VPD back protector-A layer of high density VPD in back area for optimum flexible and protection-removable waistband-Highly breathable mesh.