Flylow Men's Size Chart:

Flylow sizing runs similar to other brands

Regular Fit: A traditionally cut fit that sits comfortably and true to size. Not too baggy; not too tight. Right down the middle. This standard fit allows for plenty of maneuverability in a classic, everyday shape for daily life and active missions.

Relaxed Fit: Our most generous fit, which hangs in a flowy, roomy style that offers a relaxed comfort and total freedom of movement. This fit is free of constraints but still retains shape, structure, and clean design.

Slim Fit: This athletic styling offers a low-profile, contoured fit so that no extra bulk gets in the way. With ample stretch to retain mobility, this fit offers a slender and streamlined design for layering and on-the-go activities.