TuffStuff Hyperflex Slim Fit Work Jogger Trouser with Reinforced Knee Protection Features: SLIM FIT 4 Way Stretch Tuff-Tex 2.0 reinforced knee protection Adjustable waistband Zipped pockets Gusset at crotch Suitable for builders, carpenters, electricians, engineers and all other trade workers Size Guide: (To fit waist)S: 30″- 32″M: 32″- 34″L: 34″ – 36″XL: 36″- 38″2XL: 38″ – 40″3XL: 40″ – 42″