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 3.2" Open Fly, Red
ProActive Stretch Trunk 3.2" Open Fly, Red
Men’s Anatomical Underwear with Support Pouch, Moisture Control and Ultra Soft, Breathable Fabric, Structure Detail View

ProActive Stretch Trunk 3.2" Open Fly, Red

Regular price $21.50 Sale price$18.92 TOTAL SAVINGS: $2.58
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Size
Color
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Size Guide Image
Size Waist Hips Length Inseam
S (44) 29.9–31.5 34.6–36.2 6.4–7.4 2.9–3.4
M (46) 31.5–33.1 36.2–37.8 6.5–7.5 2.9–3.4
L (48) 33.1–34.6 37.8–39.4 6.6–7.6 2.9–3.4
XL (50) 34.6–36.2 39.4–40.9 6.6–7.6 2.9–3.4
2XL (52) 36.2–38.6 40.9–43.3 6.7–7.7 2.9–3.4
3XL (54) 37.8–39.4 43.3–45.7 6.8–7.8 2.9–3.4
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ProActive Stretch Boxer Briefs

For the strong and broad
Reduces thigh irritation
Horizontal fly
Classic anatomical pouch
95% Cotton / 5% Elastane
Fabric weight: 185 ± 8% GSM
No pressure on the testicles against the hip
Reduced heat and better ventilation
Inseam: 2.9" – 3.4"

Introducing the ProActive Stretch Boxer Briefs
Designed for active men who need comfort and reliability during every workout. These boxer briefs feature elastic leg bands that prevent the fabric from riding up—keeping you focused on your performance, not 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 Horizontal Fly: Provides quick and easy access when needed.
  • Slightly Shorter Length: A more streamlined fit compared to the Classic, perfect for both daily wear and intense training sessions.
  • Everyday Versatility: Ideal for daily use, offering comfort and support in any situation.

With the ProActive Sports Boxer Briefs, you’ll never have to worry about distractions during your workout. Experience the perfect balance of function and comfort—whether you’re at the gym or going about your day.

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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