Premium Silk Boxer | All-Day Comfort
“We’re sharing so many more intimate moments, we’ve rediscovered pleasure together and we both feel much more comfortable.” — Lea P.
The Detail Women Notice First
A quiet Upgrade that Changed More than Your Comfort
Please note: The SLO Boxer is not sold on Amazon or eBay. Beware of low-quality imitations.
PLEASE NOTE: Limited stock — sold out 12 times this year. Order now to avoid missing out again.
Due to high demand during our Summer Sale, stock is extremely limited. This offer is available only while supplies last.
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THE DEAD BEDROOM DIDN'T START IN THE BEDROOM.
It started with the small things. The ones you stopped noticing. The ones she didn't. The worn elastic peeking above your
belt.
The fabric so faded it's lost its color. The constant adjusting — in the chair, at dinner, walking through the parking lot.
You don't see it anymore. She does.
58% of women say it's fair to judge a man based on his underwear. (Tommy
John national survey, 3,000 US adults.)
That's not about fashion. It's about effort.
The signal that says: I still care about the details you can't see.
HERE'S WHAT SHE'S ACTUALLY READING:
The adjusting. "He's uncomfortable. He's distracted. Something is always off."
The fabric showing above the belt. "He's wearing the same ones from 2017. He stopped trying."
The shift in how he carries himself. "He doesn't feel good in his own skin. I can see it. He can't."
She never says anything. Because how do you tell someone their underwear is ruining how they carry themselves? So she either adapts to it.
Or she does something about it.
65,000 men have women who did something about it. Most didn't realize why things felt different until weeks later.
THE SCIENCE BEHIND WHAT SHE FEELS:
It's called enclothed cognition. Adam & Galinsky (2012, Journal of Experimental Social Psychology, 600+ citations) proved that what you wear changes your psychological processes even when nobody can see it.
Attention. Confidence. How you occupy space.
64% of men report feeling more confident in
underwear they love. (Consumer research, 2,000+ US men.)
She's not noticing your underwear.
She's noticing what it does to you.
Our boxers are made from a premium blend of Mulberry silk, nylon, viscose and spandex, designed to deliver the smooth, luxurious feel of silk with added durability and stretch.
This combination provides:
You get the elegance of silk, with the performance and reliability needed for everyday use.
To keep your boxers looking and feeling their best:
With proper care, this silk-blend fabric maintains its comfort, fit, and premium feel far longer than standard cotton underwear.
Sizing recommendation: Want maximum comfort for the boys? Simply pick one size up from your normal size.
PRO TIP:
If you're in between two sizes, we recommend sizing up for a looser, more relaxed fit.
HOW TO MEASURE?
Choose your size based on waist circumference only. Measure your waist where the waistband naturally sits. Do not pull tight. Measure relaxed.
Silk is one of the smoothest and most durable natural fibers available—which is exactly why we chose it for our performance boxers. Combined with our engineered fit, you get unmatched daily comfort.
We're confident in our quality, so we offer a 30-Day Money-Back Guarantee.
Your comfort is our priority. If these aren't the most comfortable boxers you've ever worn, simply contact us and we'll make it right.
Yes, but handle with care. Use cold water and mild detergent on a delicate cycle. We recommend using a mesh laundry bag (included with your order) and letting them air dry. This simple routine keeps your silk boxers soft and durable for years.
Silk is a natural protein fiber valued for its exceptional softness, breathability, and smooth texture. In boxer shorts, silk provides a luxurious feel while actively regulating temperature and reducing friction—keeping you comfortable all day long.
Because their smooth, natural fibers minimize friction, allow skin to breathe, and reduce irritation. Unlike synthetics that trap heat and disrupt comfort, silk is hypoallergenic and gentle—making it ideal for sensitive skin and daily wear.
Silk is naturally breathable and temperature-regulating, wicking moisture away and allowing airflow to keep you cool and dry all day. Cotton absorbs moisture and stays damp, while synthetics trap heat—silk outperforms both.
While silk feels delicate, our boxers are designed for durability. With proper care (cold wash, air dry), they can outlast many cotton or synthetic boxers. The reinforced construction and premium 6A silk ensure long-lasting quality.
Yes. Premium Mulberry silk-blend lining is hypoallergenic, breathable, and exceptionally soft—making it ideal for everyday comfort. The smooth fibers are gentle on the skin and help prevent irritation and chafing, even during extended wear.
Silk naturally maintains optimal temperature by wicking moisture and allowing heat to dissipate. This breathable design keeps you cooler in warm conditions and comfortable in cooler weather—ideal for all-day wear in any climate.
Our anatomical engineering provides structured support without compression. The contoured pouch maintains natural positioning while the anti-roll waistband stays flat. The result: no ride-up, no adjusting—just all-day comfort.
Yes. Our contoured support pouch is designed to maintain optimal positioning and reduce pressure points. You get the freedom of boxers with the structured support of a brief—comfort and confidence in one design.
Absolutely. The engineered fit and seamless construction prevent bunching and ride-up, even during movement. Whether you're at the office, gym, or traveling, these boxers stay put exactly where they should.
With proper care (cold wash, air dry), our premium silk boxers maintain their shape, softness, and durability for years. Many customers report their first pairs still look and feel new after 12+ months of regular wear.
No problem. We offer free size exchanges—just contact us and we'll send the correct size at no charge. Our 30-Day Guarantee means you can try them risk-free.
Shipping: All orders are dispatched within 24–48 hours.
Delivery time: 6–9 business days.
30-day returns: Not satisfied? Return your order within 30 days for a full refund, no questions asked. Items must be returned in their original packaging.
“I was struggling with boxers riding up for years, especially with my bigger thighs. These stay exactly where they’re supposed to. The legs don’t creep up and bunch, even when I’m sitting for long periods — which is most of my day. Finally boxers that work for my body type. Ordered 3 more pairs immediately.”
“Ordered the black and burgundy to test. Both are identical quality, no difference in fabric thickness or softness. The champagne is actually really nice under lighter pants (no show-through). Silk feels consistent across colors which isn’t always the case with dyed fabrics. Planning to grab the grey next.”
“My wife bought these as a ‘just because’ gift and honestly? They make a difference. The cut is really flattering and the fabric has this subtle sheen that looks premium. She definitely approves lol. But beyond that, they’re just insanely comfortable for long days. No more feeling gross by afternoon.”
“Bought these for my boyfriend after he kept complaining about chafing during his bike commute. He was skeptical about silk at first but wore them the next day and immediately texted me ‘where did you find these??’ Now he wants me to throw out all his old ones. The quality is really impressive and they still look new after a month.”
“I work in sales so I’m in and out of the car constantly. Used to have to adjust my boxers like 20 times a day — super annoying in client meetings. These literally stay in place from 7am to 7pm. Zero ride-up. Plus they don’t get that swampy feeling cotton does in summer. Game changer for my job honestly.”
“I’ll admit I was worried about washing silk. Threw them in a cold wash with my regular stuff (in the mesh bag they included) and they came out perfect. No shrinking, no weird texture changes. I’ve washed them like 6 times now and they’re still as soft as day one. Way easier than I expected.”
“I ordered these at 2am on a Tuesday. Didn’t tell my wife. Felt almost embarrassed (a 50-year-old man secretly ordering underwear online like it’s some kind of indulgence). They arrived Thursday. I wore them Friday. By Sunday she asked if I’d been working out. I hadn’t. I just wasn’t adjusting, wasn’t shifting, wasn’t doing that thing men do when nothing fits right. She read that as confidence. She wasn’t wrong.”
“Divorced at 48. Started dating again after two years. The anxiety of someone new seeing you undressed at this age is real. I looked at my drawer faded Hanes from my marriage. That was the first thing I changed. Not for her. For me. Walking into a date knowing that even what nobody sees is handled — that does something to how you show up.”
The first time you put ARES on, there's a sensation you don't have a word for yet. A cold glide.
Mulberry silk-blend lining against your skin in a way cotton never managed. You'll just stand there for a second. That's when it registers
Cool, dry, frictionless. Your body stops fidgeting. You stop adjusting. You
project calm — because you feel it. Your nervous system reads silk differently than it reads cotton.
The surface friction is 34% lower (TRI Labs). Your brain registers comfort, not irritation. And that changes how you move through a room.
A man who takes care of what nobody can see — she trusts what she can see. It's not about the underwear. It's about what it says: I decided I'm still worth investing in.
After 20 years of mortgages and kids and
careers — that signal matters more than any suit or haircut.
Designed to go beyond basic comfort
SLO Silk Boxers do more than upgrade your underwear drawer. Their silky feel, supportive fit and refined construction help reduce friction, stay comfortable throughout the day and create a more elevated everyday experience.
We're Thomas & Samir, best friends and founders of SLO Underwear.
While exploring Singapore's vibrant markets, we stumbled upon silk boxers that promised unparalleled comfort.
Intrigued, we tried them—and the difference was remarkable.
The luxurious softness and all-day breathability were unlike anything we'd experienced.
That discovery inspired Ares Underwear: bringing premium silk comfort to men who refuse to settle for less.
Ultimate Comfort
Enjoy soft, breathable SloSilk® Technology that feels like a second skin.
Breaths With You
360° Breathability Premium silk naturally circulates air, keeping you cool and fresh all day.
Moisture-Wicking
Natural moisture control—silk keeps you dry and comfortable, no sweat.
Odor-Neutralizing
Pure silk naturally resists odor-causing bacteria—stay fresh from morning to night.
Antimicrobial & hypoallergenic
Stay fresh and itch-free—designed to keep your skin feeling great all day.
Anti-Roll Waistband
Enjoy 100% Snug fit—No-roll waistband keeps everything in place with zero chafing.
Sexologists, couples therapists and sexual wellness professionals know that when the body feels properly supported, it becomes easier to relax, stay present and fully enjoy the moment.
When your body has to compensate less, your mind is freer to focus on sensation and connection.
Better alignment and proper pelvic support can make certain positions feel more natural, more stable and more comfortable to maintain.
Less effort. Fewer adjustments. More relaxation. Everything you need to experience intimacy with greater freedom.
RECOMMENDED BY SEXOLOGISTS • 25,000+ HAPPY CUSTOMERS • 30 DAYS TO TRY IT
RECOMMENDED BY SEXOLOGISTS • 25,000+ HAPPY CUSTOMERS • 30 DAYS TO TRY IT
RECOMMENDED BY SEXOLOGISTS • 25,000+ HAPPY CUSTOMERS • 30 DAYS TO TRY IT
RECOMMENDED BY SEXOLOGISTS • 25,000+ HAPPY CUSTOMERS • 30 DAYS TO TRY IT
RECOMMENDED BY SEXOLOGISTS • 25,000+ HAPPY CUSTOMERS • 30 DAYS TO TRY IT
RECOMMENDED BY SEXOLOGISTS • 25,000+ HAPPY CUSTOMERS • 30 DAYS TO TRY IT
Research Shows Ares Underwear’s Real Impact:
of women say it's fair to judge a man based on his underwear. Not the brand. The effort. Worn elastic says: "I gave up." Silk says: "I didn't."
find their partner more attractive when he wears Ares Underwear boxers.
report increased confidence and motivation when wearing Ares Boxers.
30 days to experience SLO
Discover SLO at home, in the privacy of your own space.
If it isn’t right for you, you have 30 days to return it.
Discreet delivery
Your order arrives in plain, discreet packaging, with no visible indication of what’s inside.
