How to Choose Workout Shorts with Liner | Fit Guide

Most men’s and women’s training shorts now include a built-in liner, which means you can skip a second layer and cut down on chafing. The right pair supports you through squats, sprints, and everything between. To pick well, you need to weigh three things before you ever look at color: what the liner is made of, how long the inseam runs, and whether the fabric wicks moisture or traps it.

Which Liner Type Fits Your Workout?

The liner does the heavy lifting for support and friction control, so it deserves your attention first. The two main styles are compression liners and looser brief or boxer-style liners.

Compression liners hug the legs and provide firm support, which makes them a common pick for heavy lifting and high-impact sessions. Looser mesh liners feel less restrictive and often suit shorter runs, casual gym days, or anyone who finds tight compression uncomfortable. There is no universal winner: more compression is not automatically better, and what feels great for one body shape can dig in for another.

Two quick checks tell you if a liner works: it should sit firmly where you need support without squeezing, and the edges should not dig into your thighs or roll upward during movement. If the hemline of the liner bites into your skin, that pair will bother you by minute ten of a workout.

What Inseam Length Should You Pick?

Inseam length controls the balance between freedom of motion and thigh coverage. A 5-inch inseam offers more airflow and range of motion, making it a go-to for running and HIIT. A 7-inch or 9-inch inseam adds coverage and helps reduce inner-thigh chafing, which is a common complaint on longer runs or sweaty sessions.

Your height and leg shape influence the choice too: a 5-inch short on a tall runner lands higher up the thigh than it does on someone shorter, so use your own proportions as the guide rather than a universal chart.

To find your number, measure a pair of shorts you already own: lay them flat and measure from the crotch seam to the hem. Use that as your starting point and adjust from there. If you regularly deal with thigh rub, go longer rather than shorter.

Fabric, Fit And Features That Matter

Fabric determines whether you stay dry or end up soaked. Look for moisture-wicking polyester or nylon blends and avoid cotton-heavy materials, which hold sweat and turn heavy and uncomfortable mid-workout. A secure waistband with an internal drawcord adds adjustability, and zipped pockets let you carry keys, cards, or gels without worrying about them bouncing loose.

Before you buy, do a quick movement test: squat, lunge, jog in place, and do a few high knees. The shorts should allow full range of motion without riding up or bunching around the inner thighs. If you plan to wear them without underwear — which most lined designs expect — test them that way, since adding a layer underneath can make the fit restrictive and bunched.

Match the shorts to the workout itself: runners tend to prefer lighter, breathable fabrics with brief or boxer-style liners, lifters often want compression support, and CrossFit or general gym-goers need a secure waistband with a liner that never restricts movement.

How To Test Shorts Before You Commit

The fitting room is where you find out if a pair actually works. Try the shorts on with the liner setup you plan to use, tighten the drawcord to a normal fit, and run through the movement test described above. Watch for liner edges that dig in or roll inward, and check that the shorts sit comfortably at the waist without constant adjustment.

One honest note: fit is highly individual, so your “best” pair depends on your body shape and training style more than any review can predict. If you want a data-backed starting point on specific models, this roundup of the best workout shorts with liner compares top options across inseams and liner types.