HLXX is an abbreviation for Hyper Light 20 because these shorts are so lightweight you'll barely be able to tell you're wearing them. We kept the design streamlined so they could be multi-functional. Good for working out, golf and everything in between, even casual settings.Features2 side pockets1 zippered back pocket2.5 inch side slit for mobility1.75 inch elastic waistbandInternal drawstringEmbroidered vertical logo on right hip​Available sizesSmall, Medium, Large, XL, 2XLIf you are in between sizes, size up.​100% Polyester. Fit is typically similar to most peoples jean size.