Name: ProActive Stretch Trunk 3.6" OpenFly, Red
Brand: Man's Set
SKU: SBS120-07
Price: 21.5 USD
Availability: InStock

Man’s SET ProActive Stretch Trunk in red, 3.2" OpenFly anatomical men’s underwear with contour pouch, front angle view

Red ProActive Stretch Trunk 3.2" OpenFly by Man’s SET, breathable anatomical men’s underwear with comfort pouch, front view

Man’s SET red ProActive Stretch Trunk 3.2" OpenFly, anatomical men’s underwear with supportive pouch, close-up front view

Man’s SET red ProActive Stretch Trunk 3.2" OpenFly, breathable men’s underwear with black trim, back view

Man’s SET ProActive Stretch Trunk 3.2" OpenFly in red, anatomical men’s underwear with black waistband, angled back view

ProActive Stretch Trunk 3.6" OpenFly, Red

Men’s Anatomical Underwear with Support Pouch, Moisture Control and Ultra Soft, Breathable Fabric, Structure Detail View

$21.50

Free shipping on orders over $60

📦 Shop more items and get a bigger discount:

Buy 2 items	7% off
Buy 3–4 items	10% off
Buy 5+ items	15% off

Why MAN'S SET?

Convenient open-fly design
High-performance ball pouch
Keeps you 1.5" cooler all day
Moisture-absorbing technology

Color — Red

Red

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In stock, ready to ship
Backordered, shipping soon

Free shipping on orders over $60

ProActive Stretch Boxer Briefs

For the big and strong

Reduce irritation between the thighs

Horizontal fly

Classic anatomical pouch

95% cotton / 5% elastane

Fabric weight: 185 ± 8% GSM

Reduced heat and better ventilation

Inseam: 2.9" – 3.4"

Introducing the ProActive Stretch Boxer Briefs, designed for active men who demand comfort and reliability during every workout. These boxer briefs feature leg grippers that prevent the fabric from riding up—so you stay focused on your performance, not adjusting your underwear.

Why You’ll Love Them

Secure Leg Bands: Keep the boxers in place, preventing them from creeping up during movement.

Convenient Horizontal Fly: Provides quick and easy access when needed.

Slightly Shorter Length: A more streamlined fit compared to the Classic, ideal for both daily wear and intense training sessions.

Everyday Versatility: Perfect for gym days or daily life, delivering lasting comfort and support.

With the ProActive Stretch Boxer Briefs, you’ll never have to worry about distractions mid-workout. Discover the perfect balance of function and comfort—whether at the gym or on the go.

Model Size

The model is wearing Size L
Waist: 33.5"
Belt circumference: 35.5"
Hip circumference: 38.5"

Fit
Swimwear style
Horizontal fly
Inseam: 3.2"

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.

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.

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.