How to Choose Underwear for Workouts and Long Walks

Quick answer

Choose smooth, stretchy micromodal underwear for sweaty workouts and long walks, and switch to a woven boxer short for rest days or sleep. Prioritize a close, non-digging fit, folded or flat edges, and a rise that stays put under leggings. If you chafe easily, avoid bulky seams and stiff waistbands before anything else.

Workout underwear fails in predictable ways: it rides up, digs in, or turns a five-mile walk into a chafing experiment. The fix is not one magic pair. It is matching fabric and cut to how much you sweat and how far you go.

This guide gives you decision rules instead of a shopping list. You will learn which fabrics handle moisture, how fit affects chafing, and when a woven boxer short beats a stretch brief. Two NUNE styles anchor the examples because their catalog facts show the trade-offs clearly.

Fabric first: what handles sweat and long distances

For anything that makes you sweat, look for a smooth, lightweight fabric with generous stretch. Micromodal is a strong default: it is breathable, stays soft wash after wash, and helps regulate temperature, which matters on long walks where you heat up and cool down. A close fit in a stretchy knit also reduces the fabric movement that causes friction.

Woven fabrics behave differently. They are structured, calm against the skin, and better for cooler, lower-sweat situations like lounging or sleeping. They are not automatically wrong for a walk, but a woven short with a functional fly and buttons is designed more for rest than for a hard effort. Match the fabric to the intensity, not the other way around.

• Sweat heavily or walk fast? Choose a breathable micromodal knit.
• Cool, easy day or recovery? A softly structured woven is comfortable and calm.
• If a fabric fact is not listed, treat it as unknown and size up rather than guessing.

Fit rules that prevent chafing

Chafing comes from movement plus moisture plus a rough edge. A fit that is too loose lets fabric bunch and rub. A fit that is too tight creates pressure points and digs in. The target is a close, smooth fit that moves with the body without restriction. Look for soft folded edges or considered seams, because those are the parts that touch skin first when you move.

Rise matters as much as size. A mid-rise that sits comfortably against the skin is less likely to roll or shift under leggings than a rise that cuts across the wrong part of your hip. If you are between sizes, choose the size that stays put when you squat, then check the waistband does not leave a mark after ten minutes.

• Do a squat test in the fitting room or at home before you commit.
• Check the waistband and leg openings for pressure marks after ten minutes.
• If edges dig in, the size or the edge construction is wrong, not your body.

Cut and coverage: brief, boxer brief, or boxer short

A mid-rise brief gives you minimal fabric and maximum airflow, which suits hot workouts and anyone who dislikes extra material. A boxer brief adds coverage on the inner thigh, which helps if your thighs touch and you chafe there. A boxer short is the most relaxed option and works well for sleep, lounge, and time away, but the looser fit is not built for high-sweat activity.

For women, a brief or a bralette-friendly base layer is usually enough for walking and gym sessions. For men, the boxer brief is the workhorse for activity, while the boxer short is the rest-day choice. The decision rule is simple: more movement and sweat means a closer, smoother cut; less movement means you can choose relaxed coverage.

• Inner-thigh chafing? Choose a boxer brief for coverage.
• Hot studio class or summer walk? A breathable brief keeps you cooler.
• Rest day or sleep? A relaxed boxer short is the comfortable pick.

Waistbands, seams, and the details you feel at mile three

An extra-soft waistband and considered seams are not marketing extras; they are the difference between finishing a walk comfortably and adjusting your underwear every block. Flat or folded edges sit smoothly against skin, while bulky seams and stiff elastic create the friction that shows up later. If you are sensitive, run a finger along the inside of the waistband and leg openings before you buy.

Buttons and fly construction matter more for woven styles. A functional fly with buttons adds modesty and structure, which is useful for a boxer short worn as sleepwear or loungewear. For activewear, simpler is usually better: fewer closures, fewer places to rub.

• Prioritize soft folded edges and an extra-soft waistband for long walks.
• Avoid heavy seams if you know you chafe easily.
• For activity, choose fewer closures; save buttons and flies for rest wear.

Decision rules for workout and walking underwear

• If you sweat heavily or walk fast: Choose a breathable micromodal knit with generous stretch and a close fit, such as a mid-rise brief or boxer brief. Smooth fabric plus close fit equals less friction.
• If your inner thighs chafe: Choose a boxer brief for coverage, and check that the leg openings have soft edges rather than stiff elastic. Coverage only helps if the edges are smooth.
• If you are between sizes: Size to the fit that stays put during a squat, then confirm the waistband leaves no pressure marks after ten minutes. A close fit that does not dig in is the goal.
• If it is a rest day, sleep, or travel: A relaxed woven boxer short is comfortable and calm, but it is not designed for high-sweat activity. Match the cut to the intensity of the day.

Catalog facts that matter for active days

• Mid Rise Brief: Made from silky-soft micromodal with generous stretch, a flattering mid-rise fit, and soft folded edges that sit comfortably against the skin without digging in. The smooth micromodal and folded edges reduce friction, and the mid-rise stays put under leggings, making it a strong pick for sweaty workouts and long walks.
• Original Boxer Brief - Mens: Made from premium micromodal chosen for softness, breathability, and a smooth lightweight feel, with a fit developed and tested for support without restriction and an extra-soft waistband. The closer coverage helps prevent inner-thigh chafing, while the breathable micromodal and soft waistband keep long walks and gym sessions comfortable.
• Boxer Short - Macel - Oat: A relaxed woven boxer short with a functional fly and buttons for modesty, designed to move between sleep, lounge, and time away. This is the rest-day and travel option, not the high-sweat choice; the looser woven fit is comfortable but less suited to hard activity.

Who this approach fits

Best for

• Walkers and gym-goers who sweat and want chafe-free comfort
• Anyone layering under leggings who needs a rise that stays put
• People who want one simple fabric rule for active days

Not for

• Anyone wanting a loose, relaxed fit for hard activity
• Shoppers who prefer stiff, structured waistbands
• People looking for a single pair to cover both workouts and sleep

Pick breathable micromodal with a close, smooth fit for workouts and long walks, and keep a relaxed woven boxer short for rest days. Check the edges and waistband before you commit, because those details decide whether mile three feels easy or irritating.