Quick answer

Most underwear problems come down to three things: the wrong size, the wrong fabric for the activity, and washing habits that wear out elastic. Get the size right first, choose fabric by how you'll use the pair, and wash in cool water with low heat. That solves the majority of fit and comfort complaints.

Underwear is the layer you wear the most and think about the least, until something feels wrong. The questions below are the ones readers send most often, and each answer stands on its own so you can jump straight to the issue you're dealing with.

Where a question touches on fabric or construction, the answer reflects how HOM pieces like the Plumes Micro Briefs and Classic Mini Briefs are actually built, so the guidance is specific rather than generic.

How should briefs actually fit?

A well-fitting brief stays put when you walk, bend, and sit without digging into your waist or riding up at the leg. The waistband should sit flat against your skin, not leave a red mark after an hour. If you can slide two fingers under the band comfortably, the size is usually right.

Cut matters as much as size. A mini brief covers less of the hip than a standard brief, which gives more freedom of movement but also means less coverage. The Plumes Micro Briefs use a micro-cut that sits slightly shorter on the hips than mini-briefs, so if you want movement without excess fabric, that shape is worth trying.

  • Check the leg opening first: if it cuts in, size up or switch to a trunk.
  • Waistbands should lie flat, not fold over or roll down.

Which fabric should I choose?

There's no single best fabric, only the right one for the moment. Cotton and modal blends breathe well and feel natural against skin, which suits everyday wear and anyone who dislikes synthetic textures. Microfiber polyamide blends feel thinner and lighter, dry faster, and disappear under close-fitting clothing.

If you wear suits or slim trousers, a smooth microfiber brief reduces visible lines. If you're lounging or sleeping, a soft modal cotton is usually more comfortable. Many people keep both in rotation and pick based on the outfit, not the day of the week.

  • Natural fibers for breathability and a soft, fresh touch.
  • Microfiber for invisibility under clothing and quick drying.

Why does my underwear ride up or slide down?

Riding up usually means the leg opening is too loose or the fabric has lost elasticity from repeated hot washing. Sliding down usually means the waistband is too large or has stretched out. Both are fit and care issues more than brand issues.

Check whether the elastic still snaps back when you stretch it. If it stays stretched, the garment is done. If it's still springy, try a different cut: a trunk or a G-string may stay in place better than a brief for your body shape.

  • Wash in cool water to preserve elastic life.
  • Rotate pairs so no single one wears out first.

How often should I replace my underwear?

There's no fixed calendar, but elastic is the tell. Once waistbands stop recovering, leg openings stay stretched, or the fabric thins to the point of transparency, it's time to replace that pair. For most people with a reasonable rotation, that's somewhere between one and two years.

Keeping more pairs in rotation spreads the wear and extends the life of each one. If you own five pairs and wear them weekly, they'll wear out far faster than if you own twelve.

  • Retire any pair with elastic that no longer snaps back.
  • Buy in small batches to keep the rotation fresh.

How should I wash underwear to make it last?

Cool water, mild detergent, and low heat are the three rules. Hot water and high dryer heat are the fastest way to kill elastic, which is what causes sagging waistbands and stretched leg openings. When in doubt, air dry.

Turn prints and lace inside out before washing to protect the surface. If a garment has a jacquard-knit waistband or delicate lace, a mesh laundry bag prevents snags and pulls.

  • Skip fabric softener; it coats fibers and reduces breathability.
  • Air dry whenever possible to extend elastic life.

What's the difference between a brief, a trunk, and a G-string?

Coverage and silhouette. A brief offers full coverage at the hip and seat. A trunk sits lower on the waist with a shorter leg, somewhere between a brief and a boxer brief. A G-string or thong offers minimal coverage and is chosen specifically for invisibility under fitted clothing.

The right choice depends on what you're wearing over it and how much coverage you want. There's no hierarchy here; each shape solves a different problem.

  • Briefs for everyday coverage and support.
  • Trunks for a lower waist and modern silhouette.
  • G-strings for zero visible lines under slim clothing.

Quick checks before you buy or toss

Fit check

Waistband lies flat, leg openings don't cut in, and nothing rides up when you move. If any of these fail, adjust size or cut before blaming the fabric.

Fabric check

Match the fabric to the outfit and activity: natural fibers for breathability, microfiber for invisibility and quick drying. Keep at least one of each in rotation for different situations.

Care check

Cool wash, mild detergent, low or no dryer heat, and no fabric softener. This alone can add months to the life of elastic waistbands.

Replacement check

Stretch the waistband: if it doesn't snap back, the pair is done. Replace rather than tolerate sagging or stretched-out pairs.

How specific HOM pieces answer these questions

  • Plumes Micro Briefs | Skin 404756-00dt: Made with polyamide elastane for a thin, light-as-a-feather feel, with a thin elastic band and micro-cut that sits slightly shorter on the hips than mini-briefs. A strong choice if you want invisible underwear under clothing and more freedom of movement without excess fabric.
  • Freddy G-String | Blue 400202-00bi: Stretch cotton thong with a rounded elastic front lining and covered waistband, designed to be invisible under pants and suits. Suits anyone who prefers natural cotton over synthetic fabrics but still wants a no-show result under fitted trousers.
  • Free Cut Lace Trunk | Black 402888-0004: Sits low on the waist with a sheer body and pouch in a paisley lace pattern, a center back seam for a body-defining fit, and a wide jacquard-knit HOM logo waistband. A good option when you want a lower-rise trunk with a defined fit and a distinctive look rather than plain basics.
  • Classic Mini Briefs | Black 400204-0004: Classic-cut brief in soft, breathable modal cotton fabric with a fit designed for everyday wear. The straightforward everyday pick if you want breathable natural fabric and a traditional brief shape.

Most underwear questions have a practical answer: get the size right, match fabric to use, and wash with elastic in mind. Start there, and you'll fix the majority of comfort problems without buying anything new.