MOTO-D Coolmax Motorcycle Undersuit wicks Moisture and Perspiration to keep you COOL.High Stretch Fit for Maximum Range of Motion.Full Length Two-Way Zipper, Comfortable Footstraps (keeps suit in position).Slide in and out of Motorcycle Leathers, Jackets, and Pants with Ease. Most Comfortable Motorcycle Undersuit specifically designed for Motorcycle Riding, will not Bunch Up or Separate like "Tight Workout Compression Gear". MOTO-D undersuits are high stretch, soft, and forgiving which is why they are comfortable and act like a smooth 2nd skin (vs. a tight compression "muscle" shirt). Worn by riders in the AMA (MotoAmerica), CCS, WERA, AFM, and Top Level Racing Schools and Trackday Organizations. If you are in between sizes or +5lbs over (but under 6ft tall), please select the smaller suit size for best fit.