Man’s SET ProActive Stretch Trunk in khaki with  OpenFly, anatomical men’s underwear for active comfort, angled front view
Comfortable men’s underwear by Man’s SET, khaki ProActive Stretch Trunk with 3.2" OpenFly, front view
Man’s SET khaki ProActive Stretch Trunk with black trim, anatomical men’s underwear with 3.2-inch OpenFly, front view
Khaki ProActive Stretch Trunk 3.2" OpenFly by Man’s SET, supportive men’s underwear with contrast trim, back view
Man’s SET khaki ProActive Stretch Trunk with 3.2" OpenFly, anatomical men’s underwear with black trim, angled back view
ProActive Stretch Trunk 3.2" OpenFly, Khaki
ProActive Stretch Trunk 3.2" OpenFly, Khaki
Men’s Anatomical Underwear with Support Pouch, Moisture Control and Ultra Soft, Breathable Fabric, Structure Detail View

ProActive Stretch Trunk 3.2" OpenFly, Khaki

Regular price$21.50
/
Free shipping on orders over $60

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True Freedom Fit True Freedom Fit
Perfomance CoolTech Fabric Perfomance CoolTech Fabric
Anti-Chafe, Stay-Put Design Anti-Chafe, Stay-Put Design
Odor-Fighting Tech Odor-Fighting Tech

Why MAN'S SET?

  • benefit icon Convenient Open Fly design
  • benefit icon High-performance Ball Pouch
  • benefit icon Keeps you 1.5°C cooler all day
  • benefit icon Moisture-Wicking Technology

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Color
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  • In stock, ready to ship
  • Backordered, shipping soon
  • Free shipping on orders over $60

- For the big and strong
- Reduce chafing between your legs
- Horizontal fly
- Classic anatomical pouch
- 95% cotton / 5% elastane
- 185±8% GSM fabric weight
- Reduced temperatures and improved ventilation
- Inseam 2.91
3.43

ProActive Stretch Boxer Briefs

Introducing the ProActive Stretch Boxer Briefs—designed for active men who need comfort and reliability during every workout. These boxers feature elastic leg bands that prevent the fabric from riding up, ensuring you stay focused on your performance, not on adjusting your underwear.

Why You'll Love Them:

Elastic Leg Bands: Keep the boxers securely in place, preventing them from riding up during movement.
Convenient Top Access: Provides easy, quick access when needed.
Slightly Shorter Length: A more streamlined fit compared to the Classic, perfect for both everyday wear and intense training sessions.
Everyday Versatility: Ideal for daily use, offering comfort and support in any situation.
With Anatomic Sport Boxers, you’ll never have to worry about adjustments during your workout. Experience the perfect balance of function and comfort—whether you’re hitting the gym or going about your day.

Model Size

Model is Size L / Waist size 33.5 / Belt circumference 35.5 / Hip circumference 38.5

View Size Guide

Fit

  • Trunks
  • Horizontal fly
  • 3.2 inseam

Cotton (95%), elastane (5%).

This product is made from OEKO-TEX® STANDARD 100 certified material which means it is free of harmful chemicals.


Care Instructions:
Machine wash cold 30°С
Gentle cycle
Only non-chlorine bleach when needed
Tumble dry low
Iron low

All available shipping options will be visible at checkout. We ship orders within 10-14 business days, but this can increase during promotional periods. All sales are final and cannot be returned for a refund or exchange. For more information, check out our Frequently Asked Questions page.

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WHY MAN’S SET?

MAN’S SET is designed to fit your body perfectly, supporting the natural position of your anatomy. The patented ball pouch, engineered for movement, eliminates chafing, adapts to your shape, and provides the precise support you need for any activity.

Man's SET pouch design close-up

ADVANCED ANATOMICAL CONSTRUCTION

Our patented anatomical design with a ball pouch provides precise separation and reduces friction. Developed through medical research, it supports reproductive health and ensures maximum comfort and freedom of movement throughout the day.

CRAFTED WITH ECO-FRIENDLY PREMIUM FABRICS

Made with soft, breathable, eco-friendly materials to keep you cool and dry all day long. Every pair is produced in our own facility, where we control every step of the process to guarantee the highest quality.

TAILORED FOR YOUR LIFESTYLE

With 11 exclusive designs, our collection is made to complement any wardrobe and occasion. The body-conforming fit moves with you and delivers performance that ensures a flawless look and feel.

Our Clients' Testimonials

Tested, and Loved by Men Like You

Have a question? We’re here to help

Check out the most common questions our customers ask. If you need more help, please contact our support team.

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Our customer support is available Monday to Friday, from 10 AM to 7 PM.
What makes MAN’s SET underwear different?
MAN'S SET underwear is designed with a patented anatomical pouch for natural positioning, reduced friction, and maximum comfort. The construction is based on medical research to support male anatomy and reproductive health. We produce in our own facility to ensure consistent quality, and every model is focus-group tested for perfect fit and freedom of movement.
Where is MAN'S SET manufactured?
MAN'S SET underwear is proudly produced in our own facility in Ukraine. This lets us control every step of production and keep the highest quality standards in every pair.
Can I return or exchange underwear?
For hygiene reasons, underwear and socks can’t be returned. If your item has a manufacturing defect, we’re happy to exchange it. Please email info@manset.com.ua to request an exchange.
How can I contact support?
If you have any additional questions, please email us at info@manset.com.ua. Our team is happy to help!
What is shipping information?
We ship worldwide. For the United States:

Free Shipping: orders $60+, delivery in 10–14 days.
Priority Processing & Shipping Insurance: $21.55, ~10-day delivery; faster handling and extra protection.
Standard Shipping: $17.99, 10–14 days for orders up to $60.

At checkout you’ll see options and speeds for your country. Both standard and express shipping are available globally.