Troy Lee GP Pro Icon Jersey The GP jersey has always been built upon an undeniably solid foundation. The 2023 GP Pro version goes further than any of its predecessors by improving that foundation and adding to it. TLD started by integrating Their "Ladder" mesh in key areas of the upper side panels as well as the sleeve bottom to allow heat to escape those zones more efficiently. Next, they improved the look, fit and functionality of the collar and revamped the body styling lines and shapes to give you the best fitting and performing GP jersey - the all new 2023 GP Pro. Features: Ride Fit - Traditional waist, relaxed cut with versatile construction Heat sealed, folde front & low profile rear "race" collar with improved fit & comfort "Ladder" mesh fabric construction throughout body for improved ventilation Semi-athletic fit-not overly loose of excessive, but not tight Silicone printed tail keeps the jersey tucked in 100% Poly Air Mesh at ventilation panels Troy Lee Designs Jersey Size Chart Mens Jersey Size Chest (in) Sleeve Length (in) Center Back from HPS (in) S 20" 33.5" 30.25" M 21.5" 34.5" 31" L 23" 35.5" 31.75" XL 24.5" 36.5" 32.5" 2XL 26.5" 37.5" 33.25" Mens SE Pro / GP Jersey Size Chest (in) Front Length (in) Center Back Sleeve (in) S 20" 28.5" 33.5" M 21.5" 29.25" 34.5" L 23" 30" 35.5" XL 24.5" 30" 36.5" 2XL 26.5" 30.75" 37.5" Youth GP Jersey Size Chest (in) Front Length (in) Center Back Sleeve (in) XS 14" 22.5" 22.5" S 15.5" 23.5" 24.5" M 17" 24.5" 26.5" L 18.5" 25.5" 28.5" XL 20" 26.5" 30.5" Chest: Measure 1" below the armhole. Sleeve: With the elbow bent, measure from the center back of neck to elbow and down to wrist. Front Length: From HPS (High point shoulder).