Free Shipping on US orders over $150
-
Collections
-
Bikini
- One Pieces
- Cover-Ups
- Men's
- Sale
- MODA GLAM x L'ANIMAL
- Nice Breed
-
Choose a compression liner if you want support, no flapping and less friction. Choose a mesh liner if you want a roomier, lighter feel and mostly lounge around the pool. Neither is better for everyone. The right one depends on how you move in the water, how long you stay in the suit and how your skin reacts to fabric that stays wet.
This guide compares the two linings on comfort, support, chafing, drying time and fit. It also covers what to wear under board shorts, whether you can cut the mesh out, and how to choose lining in women’s swimwear.
Mesh is a leftover of an old design goal. A liner was meant to replace ordinary underwear with something lighter. According to Debriefs, nylon mesh dries faster and weighs less than wet cotton, and it adds modesty when the outer fabric gets wet. Those are real benefits. Cotton underwear under swim shorts stays heavy for hours.
The Strategist notes that swim trunks use mesh liners for support during swimming and other water sports, while some surfers choose unlined trunks because extra fabric can cause abrasion. That tension explains the whole debate. A liner adds support and coverage, and it also adds one more layer that can rub.
Mesh stays popular for practical reasons too. It is cheap to make, it is open and airy, and it lets water drain quickly. Many shoppers never think about it until a long day in the sun.
A compression liner replaces the open net with a soft stretch knit, closer to performance underwear than to a bathing-suit net. It sits against the body without squeezing like medical compression gear. Nothing hangs loose, so there is less fabric to twist, fold or slide while you walk, swim or play beach volleyball.
Typical features:
The Strategist’s guidance on fabric applies here. It recommends lightweight, quick-drying synthetics such as recycled polyester, spandex or nylon for swimming and surfing, since cotton gets heavy, restricts movement and dries slowly. A compression liner made from those fibers fits that advice. A cotton-blend liner does not.
| Factor | Mesh liner | Compression liner |
|---|---|---|
| Feel against skin | Light, open, can feel scratchy or clingy when wet | Smooth and stretchy, like athletic underwear |
| Support | Light, often minimal | Held in place, steady during movement |
| Chafing risk | Higher if it bunches or has rough seams | Lower when the fit is right and seams are flat |
| Drying | Fast, because it is thin and open | Fast with synthetic knits, slightly slower if the knit is dense |
| Room | Roomier, more airflow | Close fit, less airflow |
| Best for | Pool lounging, short wears, a looser feel | Swimming laps, active days, long wear, sensitive skin |
| Fit risk | Wrong size flaps or twists | Too small digs in, too large wrinkles |
One published comparison from a brand that sells compression-lined trunks puts it this way: mesh is roomier by design and does not flex the same way under fast, repeated movement. Treat that as a brand view. The mechanism is sound, though: a stretch knit follows the body and a net does not.
Chafing is simple physics. The Cleveland Clinic explains that chafing results from friction and gets worse with moisture. It recommends moisture-wicking fabrics, a proper fit and covering the areas where skin rubs.
Apply that to liners:
Women’s Wear Daily reported that traditional mesh can bunch, chafe and lack support, and described a longer, breathable liner as an attempt to keep support while reducing irritation. That matches what many wearers say. The complaint is rarely about mesh in an air-dry afternoon on a lounger. It is about hours of walking, swimming and sitting in wet, shifting fabric.
For a deeper look at the material trade-offs, this piece on mesh versus solid fabric covers the benefits and drawbacks of mesh, including comfort and abrasion.
Support is where compression pulls ahead for active use. A liner that stays put keeps your body from shifting as you kick, jump off a boat or run along the sand.
There is some research on the general idea. A study in Frontiers in Sports and Active Living found that compression garments reduced soft-tissue vibration during downhill running and reduced some delayed knee-extensor impairments. That was running, not swimming, and it does not prove that a swim liner changes performance. It does support the basic point that snug, stretchy fabric limits movement of soft tissue.
In practical terms:
Yes, for most people, provided the fabric is right. Choose a nylon or polyester blend with spandex, not cotton. The Strategist’s fabric advice again: synthetic fibers are preferable for swimming and surfing because cotton gets heavy, restricts movement and dries slowly.
What to check before you buy:
If your board shorts or trunks have no liner, you have three sensible options.
Avoid cotton underwear. It soaks up water, gets heavy and stays damp, which is the setup for chafing. If your trunks have a mesh liner you dislike, a thin compression short under them works, but you will have the mesh and the short together, which adds bulk. In that case the cleaner fix is to pick trunks with a different lining or none.
Our own guide to lined versus unlined swim trunks walks through how we think about this choice from a design side.
Yes. Debriefs says you can carefully cut the mesh along its attachment points. That may reduce irritation, but it removes coverage if the outer fabric needs it, so wear another liner if needed.
Before you pick up the scissors:
Cutting is permanent. If you are unsure, try wearing a compression short underneath first for a day. If that fixes the problem, you know the mesh was the cause.
Women’s swimwear handles lining differently from men’s trunks. You rarely see a mesh brief, but lining still matters, and the same logic about friction and wet fabric holds.
What to look for:
We offer a range of cuts to match these needs, from bikinis to one-piece swimsuits and cover-ups for the walk from beach to lunch.
We think about lining as part of the design, not an afterthought. A liner has to match the shell: the weight of the fabric, how opaque it is, the inseam and how the garment moves. A lining that works in one cut can be wrong in another.
Our rule of thumb is to start from how you will wear the piece. If you will swim and move a lot, support and a smooth inner face matter most. If you will lounge and sip something cold, airiness matters more. Fabric matters either way, which is why we wrote about 10 to 20 percent spandex and weight ranges, and why we test how a fabric looks wet, not just dry.
We also think fit is the quiet decider. A good compression liner in the wrong size will annoy you more than a good mesh liner in the right one. If you sit between sizes, consider the activity first and the look second.
For men’s trunks, inseam length changes how the liner and shell interact, so our notes on 6 to 7 inch inseams and on drawstring swim shorts may help you pick a length that does not ride up.
— Lital
If you are choosing a new suit, we make designer swimwear for women and men, including men’s swim shorts, bikinis, one-piece swimsuits and resortwear. Each piece is built around attention to detail, quality and timeless style.
Browse the full range at L’ANIMAL and check each product page for fabric and fit details before you order.
Use this quick checklist:
If you are still unsure, buy one pair and test it for a full day before packing it for a trip.
Mesh was designed as a light, quick-drying replacement for underwear. It dries faster and weighs less than wet cotton, and it adds modesty when the shell is wet. The trade-off is that it can bunch and rub for some wearers.
For active use and for people who chafe, usually yes. It stays in place and has a smoother feel. Mesh can be the better pick when you want airflow and a looser fit for lounging.
Yes, when they are made from a quick-drying synthetic such as nylon or polyester with spandex. Avoid cotton, which gets heavy and dries slowly. Rinse them after chlorine or salt water to protect the stretch.
Yes, by carefully cutting along the attachment stitching. It can reduce irritation, but you lose the coverage the liner gave. Check the shell for see-through areas first, and plan to wear another layer if needed.
Choose a compression short or swim-specific underwear in quick-dry synthetic fabric. Skip cotton. If the board shorts are thick and opaque with a soft inner face, you may not need anything.
