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Ministry of Supply Ministry of Supply
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Ministry of Supply Ministry of Supply
Size Guide: Men's Composite Merino Boxer Brief
Size S M L XL XXL
Waist (Body) 28-30 31-34 34-36 36-40 41-43
Inseam Length (Garment) 9.5 10 10.5 11 11.5
Leg Opening(Garment) 15.25 16.75 18.25 19.75 21.25
Size S M L XL XXL
Waist (Body) 71-76 78-83 86-91 91-96 104-109
Inseam Length (Garment) 24 25 26 27 29
Leg Opening(Garment) 38 42 46 50 53
True to size with 4-way stretch fabric and a plush elastic waistband for comfort.
men's light blue heather composite merino boxer brief flat shot of front model wearing men's light blue heather composite merino boxer brief and grey composite merino long sleeve tee close up of front men's light blue heather composite merino boxer brief flat shot of back model wearing men's light blue heather composite merino boxer brief close up of front model wearing men's light blue heather composite merino boxer brief and grey composite merino long sleeve tee facing forward with sleeves pushed up and stretching boxer fabric
$28.41 $71.02
Color
Size Size Guide
Ventilated
No Odor
Moisture Wicking
Soft
Resilient Stretch
Recycled Content
Engineer's Notes
  • Soft-spun washable Merino wool
  • Eucalyptus-based TENCEL™ viscose fibers
  • Resilient stretch won't bag out over time
  • Moisture wicking/breathable
  • Targeted mesh ventilation panels
  • Natural odor control
  • Signature plush elastic waistband
  • Body:66% TENCEL™ Lyocell, 29% Merino wool, 5% Elastane
  • Ventilation:45% TENCEL™ Lyocell, 36% Nylon, 19% Merino wool
  • Made by Crown Yin in Taipei, TW
Fit
  • Inseam hits mid to upper thigh
  • See size guide for more details
Care

Machine wash cold, tumble dry low

Returns & Payments
  • Free U.S. Shipping & Easy Returns*
  • Flat-rate International Shipping & Returns*
  • View our full Returns & Exchange policy HERE

Multiple payment options available:

  • Express: Apple, Google, Paypal, Amazon
  • Shopify: Shop Pay, Shop Pay Installments

*Unless otherwise noted. Final sale items are not eligible for returns or exchanges.

Bundle & Save

Save 15% on 3 or more pairs with code BRIEF15

Men's Composite Merino Boxer Brief

Light Blue Heather / S

Dry Microclimate

Composite's highly hygroscopic blend of TENCEL™ & Merino wool is moisture wicking and 44% more breathable than cotton briefs - perfect for those 19 hour days.

Softness & Odor Control

17.5 micron washable Merino wool provides luxurious next-to-skin softness, and naturally mitigates odor-causing bacteria.

Ministry of Supply° vs Them

Feature

Lululemon

Brooks Brothers

Travel Friendly?

Packable, wrinkle-resistant, carry-on ready

Only for the hotel gym

Non packable & uncomfortable

In-Flight Comfort?

4-way stretch, breathable, soft

Excellent stretch and comfort

Restrictive, traditional weaves

Wrinkle Resistance?

Flight-to-meeting ready

Wrinkle resistant

Requires hotel iron

Low Maintenance?

Machine & sink washable

Machine washable

Dry clean only

Durability?

Lab-tested for abrasion, pilling, recovery

Not lab-tested, may lose structure

Not lab-tested

Sustainability?

Recycled & bio-based fibers, emissions tracked

Some eco materials, limited reporting

No sustainability transparency

Style Sharpness?

Tailored, polished, professional silhouette

Sport-casual aesthetic, not meeting-ready

No Emissions Classic, boardroom-appropriate

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Frequently Asked Questions

What makes your products better than other brands?

Our products are made from a variety of innovative, high-performance materials built to wick moisture, resist wrinkles and stretch in all the right places. Every item is designed to provide next-level comfort, flexibility, and durability, without compromising a sharp, work-ready aesthetic. You can learn more about specific fabric platforms on our Fabric Technology page

Are your pieces machine washable?

“Low-maintenance apparel” is our mantra - all of our garments are machine washable, and most can be tumble dried on low. We do recommend hang-drying suit jackets and laying our sweaters flat to air dry. Always check the care label on each item for specific instructions.

What’s your shipping and returns policy?

We accept returns or exchanges on unworn items in their original condition (unwashed, undamaged, tags attached) within 30 days of purchase. A $7 return shipping fee applies if you use our pre-paid label, or you can provide your own to waive the fee.

Prefer store credit? Eligible items can be exchanged for store credit up to 30 days after purchase. For discounted products terms apply.

Items marked Final Sale or Exchange Only are not eligible for return or store credit.

Please note: Once your return has been dropped off or shipped, we’re unable to make changes to the request. For questions or assistance, contact us at [email protected].

Learn more here.

Where is your clothing manufactured?

Our clothing is made in a variety of locations around the world, including domestically and in Asia. We carefully select manufacturing partners who share our commitment to high-quality craftsmanship, ethical labor practices, and sustainability. All of our production undergoes third-party inspection. Learn more about our factories.

What are your sustainability practices?

We take great pride in our sustainability initiatives - using durable, bio-based and recycled materials, utilizing zero-waste computerized knitting, and incorporating eco-friendly fabrics into many of our designs. We are constantly improving our processes to minimize environmental impact, from garment creation to reaching your doorstep. Learn more here.

Can you help me find my size?

We recommend using the size guides and fit tips available on each product page to find your perfect fit. You can also use the TrueFit widget to determine your recommended fit based on height, weight and body type. Our clothing is designed with a modern fit and generous stretch, so keep this in mind while shopping.

Do you test your products? What tests do you use?

At Ministry of Supply, we rigorously test our products to ensure best-in-class performance, durability and comfort - to that end, each product we make undergoes 50+ ASTM/AATCC tests, including:

  • Moisture-Wicking Tests to ensure fabrics effectively pull sweat away from the skin, keeping you dry and comfortable throughout the day.

  • Stretch and Recovery Tests to ensure pieces stretch comfortably and return to their original shape without sagging or losing form.

  • Temperature Regulation Testing to keep you cooler in the heat, and warm in cooler conditions.

  • Odor Control Tests to ensure that the fabrics maintain freshness even after prolonged wear.

  • Wash and Wear Durability Tests to make sure your clothes will withstand daily use and retain their sharp aesthetic for years to come.

Climate Neutral Certified

We’ve been carbon neutral from day zero, and we’re investing in projects to minimize our footprint.

Engineered to Perform

Designed, built and tested to perform. We guarantee all of our products for life.

Hassle-Free Returns & Exchanges

Free Returns & Exchanges

Return items hassle-free in the first 30 days, or exchange within the first 100 (Final Sale excluded).

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