DISCONTINUED 511-40001 5.11 Tactical Clothing Muscle Mapping Shirt$44.99$39.995.11 TACTICAL CLOTHING MUSCLE MAPPING SHIRT - Muscle Mapping™ was engineered specifically for the law enforcement professional. This unique garment offers 3 different compression zones that virtually add muscle tone throughout your entire torso and offers a dynamic support system to both your muscles and back. The mesh fabric under the arms along with seamless side seams reduce friction and give Muscle Mapping™the ability to offer maximum support, mobility, and breathability. Like a hand in a glove, this shirt was designed to work in conjunction with body armor by increasing the snugness and producing a tighter, more effective fit. This is a high performance piece of equipment for a high performance professional.