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JUSTIN+SIMON XSJBU02 Bulge Thongs Color Peach Navy

JUSTIN+SIMON XSJBU02 Bulge Thongs Color Peach Navy

$ 24.99$ 20.95
Bulge Thongs are made from silky soft microfiber fabric that is nothing short of pure luxury. Wear these undies when you want to make a statement; both in style and...
SMLXL2XL
JUSTIN+SIMON XSJ03 Classic Thongs Color Peach Red

JUSTIN+SIMON XSJ03 Classic Thongs Color Peach Red

$ 23.99$ 19.95
XSJ03 Silky Sexy Thongs give you minimal coverage with a sporty, sexy look. It's made from a super lightweight microfiber that is ultra-breathable. The contour pouch offers lift and support. Ultra soft...
SMLXL2XL
JUSTIN+SIMON XSJ08 Classic Boxer Color Pride Flag

JUSTIN+SIMON XSJ08 Classic Boxer Color Pride Flag

$ 27.99$ 22.95
It features a subtle design that really shows up as it stretches to form a sleek, body-defining fit that nicely accentuates your contours. These full-coverage trunks are ideal for any...
SMLXL2XL
Unico 25040100130 Frenchis Trunks Color 00-White

Unico 25040100130 Frenchis Trunks Color 00-White

$ 35.95$ 22.75
Bring personality and comfort to your everyday essentials with these playful printed white boxer briefs by UNICO. Featuring an all-over black graphic design, a snug mid-rise fit, and a bold...
SMLXL2XL
Unico 25060101106 Pacer Briefs Color 46-Blue

Unico 25060101106 Pacer Briefs Color 46-Blue

$ 35.95$ 22.75
Inject a dose of fun into your essentials with these vibrant blue printed briefs by UNICO, featuring a lively pattern that’s anything but ordinary. Designed with a sleek low-rise fit...
SMLXL2XL
Unico 25070100104 Caudal Trunks Color 59-Gray

Unico 25070100104 Caudal Trunks Color 59-Gray

$ 35.95$ 22.75
Refresh your underwear collection with these stylish gray boxer briefs by UNICO, featuring a subtle leaf pattern and a standout mustard-yellow waistband with branded detailing. Designed for all-day comfort, these...
SMLXL2XL
Unico 25050101103 Chisell Briefs Color 59-Gray

Unico 25050101103 Chisell Briefs Color 59-Gray

$ 37.95$ 23.75
Step into refined comfort with these gray printed briefs by UNICO. Designed with a subtle geometric pattern and a soft silver waistband featuring the brand's signature logo, these briefs offer...
SMLXL2XL
Unico 25050100103 Chisell Trunks Color 59-Gray

Unico 25050100103 Chisell Trunks Color 59-Gray

$ 41.99$ 34.95
Refine your everyday essentials with these elegant gray printed boxer briefs by UNICO. Featuring a subtle geometric pattern and a soft silver waistband with signature branding, these boxers offer a...
SMLXL2XL
Unico 25060101103 Hongos Briefs Color 99-Black

Unico 25060101103 Hongos Briefs Color 99-Black

$ 41.99$ 34.95
Make your underwear drawer pop with these black printed briefs by UNICO, designed with a colorful all-over pattern and a glossy black waistband for a modern touch. These briefs feature...
SMLXL2XL
Unico 25060100103 Hongos Trunks Color 99-Black

Unico 25060100103 Hongos Trunks Color 99-Black

$ 43.99$ 36.95
Add a playful twist to your underwear drawer with these colorful printed boxer briefs by UNICO. Featuring a black base with vibrant graphic details and a subtle branded waistband, these...
SMLXL2XL
Unico 25050100104 Zelmur Trunks Color 99-Black

Unico 25050100104 Zelmur Trunks Color 99-Black

$ 41.99$ 34.95
Unleash your wild side with these striking black boxer briefs by UNICO, featuring a bold zebra-inspired pattern. Made from premium stretch fabric, they offer a sculpted fit, supportive front pouch,...
SMLXL2XL
JUSTIN+SIMON XSJ22 Cheek Briefs Color Lurex Blue

JUSTIN+SIMON XSJ22 Cheek Briefs Color Lurex Blue

$ 25.99$ 21.95
Cheek Briefs are made from super soft, stretch microfiber fabric that fits sleek and trim. The low rise, lean cut silhouette provides plenty of coverage with a sexy edge. Please...
SMLXL2XL

Celebrate fall with our Plus Size Men’s Underwear collection—built to keep you confident, comfortable, and camera-ready from Halloween through Thanksgiving weekend. We curated breathable boxers, boxer briefs, trunks, bikinis, thongs, and jockstraps in extended sizes so your base layer looks smooth under costumes, travel outfits, and cozy holiday looks.

Start with the fit that moves like you. Boxer briefs deliver thigh-hugging coverage and a supportive pouch that stays put under jeans and chinos. Trunks offer a shorter leg for a modern line beneath fitted costumes and tailored pants. Prefer minimal coverage? Seamless bikinis and thongs vanish under catsuits and tights, eliminating lines in party photos while keeping you cool under layers. Many styles feature ergonomic pouches, stay-put leg openings, and soft waistbands that lie flat without pinching.

Fabric matters when your calendar is packed. Choose breathable cotton blends for everyday ease, cool-touch microfiber for long travel days, or silky modal for all-night comfort. Mesh panels add airflow for haunted-house queues and crowded dance floors, while moisture-managing finishes help you stay fresh through game day and airport lines. Flat seams and tag-free finishes reduce friction so you can focus on the fun.

Building a costume? Start with a smooth foundation. Wear a seamless trunk or thong under superhero suits, capes, or bodycon looks for clean lines on camera. Add a harness, garters, or a sheer layer for an easy after-dark upgrade. For Thanksgiving, keep it polished but comfortable: ribbed trunks under denim for a backyard football game, or soft boxer briefs beneath tailored pants to keep hemlines crisp in family photos.

Fit guidance made simple. Our size charts help you measure accurately, and product fit notes explain rise, leg length, stretch, and support level. If you’re between sizes, consider the fabric: cotton blends relax slightly with wear, while performance microfiber holds shape during high-movement days. Multipacks let you build a reliable rotation for long weekends and back-to-back events—stock up on neutrals for travel and add a bold color or lace accent for party nights.

Shopping stays streamlined and discreet. Use filters for fabric, rise, coverage, and support to narrow choices quickly. Checkout is secure, processing is quick, and packaging is discreet across the United States and Canada. Many orders qualify for free or priority shipping thresholds, and our customer service team is available 24/7 if you want a second opinion on size or style.

Care is easy: wash gently in cold water, skip fabric softeners, and lay flat to dry to preserve stretch, color, and fit. With thoughtful care, your favorites will feel great well beyond the holiday season.

Why shoppers love our plus size lineup:
• Inclusive sizing designed for real comfort and support.
• Seamless and performance options for costumes, travel, and photos.
• Budget-friendly multipacks and regular seasonal deals.

Own the season with a base layer that works as hard as your plans. Explore Plus Size Men’s Underwear now and build a fall lineup that looks smooth on camera and moves with you from spooky nights to cozy gatherings.