1. Material: 100%Neoprene,8%Spandex+92%Polyester; 2. Internal neoprene increases thermal activity and stimulates sweating from your gym sessions; 3. Lined with rainbow reflective fabric on the outside to add security for nighttime jogging, running and other aerobic exercises; 4. A wide hook & loop waist belt increases thermogenic compression to the midsection; 5. Zip closure design for more compression, facilitating wear on and off; 6. 7 flexible metal spiral boning provides maximum contour and support, preventing rolling-up.