UltraSoft Open Fly 3.6" Trunks, Neon MAN

Premium comfort for real men - once you try, you won’t go back

Regular price $21.25
Sale price $21.25 Regular price $29.07
Unit price
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Neon MAN
Size Guide
Man’s SET Classic underwear size guide showing waist, hips, length, and inseam measurements
SizeWaistHipsLengthInseam
S (44) 76–80 29.9–31.5 88–92 34.6–36.2 17.5–20 6.9–7.9 8.5–9.7 3.3–3.8
M (46) 80–84 31.5–33.1 92–96 36.2–37.8 17.9–20.4 7–8 8.5–9.7 3.3–3.8
L (48) 84–88 33.1–34.6 96–100 37.8–39.4 18.2–20.7 7.2–8.2 8.5–9.7 3.3–3.8
XL (50) 88–92 34.6–36.2 100–104 39.4–40.9 18.5–21 7.3–8.3 8.5–9.7 3.3–3.8
2XL (52) 92–96 36.2–37.8 104–108 40.9–42.5 18.9–21.4 7.4–8.4 8.5–9.7 3.3–3.8
3XL (54) 96–100 37.8–39.4 108–112 42.5–44.1 19.1–21.6 7.5–8.5 8.5–9.7 3.3–3.8
  • Estimated Delivery:Dec 10 - Dec 14

  • Free Shipping & Returns: On all orders over $100

UltraSoft Open Fly 3.6" Trunks, Neon MAN - Premium men’s trunks designed for natural organ positioning and absolute comfort. These mid-rise UltraSoft trunks feature an open fly and an anatomical internal structure for natural positioning and secure fit. A large three-section pouch ensures that body parts remain in a pressure-free position. The glow-in-the-dark print charges up from any light source and emits a soft lime green glow in darkness for 15-60 minutes until gradually fading, while appearing white in daylight. A soft 4 cm waistband ensures comfort without pressure, and the adaptive cut accommodates various body shapes.

Materials & Care

Made from breathable stretch cotton (95% cotton / 5% elastane) for softness, flexibility, and irritation-free wear.

Performance Benefits

Anatomical support — internal structure keeps organs naturally positioned and stable
Anti-chafing & breathable — moisture-wicking fabric keeps skin dry and comfortable
Cooling effect — pouch temperature stays -1.5°C lower to prevent overheating
Reduced friction — minimal contact with thighs for more freedom
Freedom of movement — no discomfort during everyday activities or sports
Durable fit — retains shape and color after repeated washes
Versatile — suitable for daily wear and active lifestyles

Tech Proof

Wicking: 1-3 mm/s
Drying: 10-20 g/h
Cooling: 1-2°C
Martindale: 10-15k

Upgrade your underwear collection with the neon MAN UltraSoft Open Fly 3.6" Trunks. Shop now for ultimate comfort, adaptive fit, and playful glow-in-the-dark style.

• 3-section anatomical pouch — separates and supports naturally, no pressure or readjusting
• Horizontal access — quick and practical entry for everyday convenience
• Mid-rise front — keeps pressure off the abdomen for lasting comfort
• 4 cm soft elastic waistband — secure, flexible, keeps its shape after washing
• Luminous print — recharges infinitely under any light, glows in the dark for up to 60 minutes
• Adaptive cut — fits all body types for natural motion and all-day wear

Premium stretch cotton blend (95% cotton / 5% elastane) — breathable, gentle, durable
• Hypoallergenic and irritation-free — designed for sensitive skin
• Glow-in-the-dark graphic — safe and long-lasting luminescent pigment

Care instructions:
• Wash inside out to protect the print
• Maximum temperature 40°C; do not boil
• Use gentle or hand wash cycle
• Do not use bleach or chlorine-based detergents
• Air dry away from heat and direct sunlight
• Iron inside out or through fabric, avoid direct heat on the print

*Color and decorative stitching may slightly differ from photos.

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.

UltraSoft Open Fly 3.6" Trunks, Neon MAN

UltraSoft Open Fly 3.6" Trunks, Neon MAN

Free Delivery on orders over $100

Peak Performance from MAN’S SET

Advanced Moisture Control – wicks sweat away from your skin up to 3× faster, keeping you dry when it matters most.

Quick‑Dry Technology – dries in as little as 20 minutes, so you stay light and ready to move.

Odor‑Resistant Finish – antimicrobial treatment fights odor‑causing bacteria, even during intense workouts.

Built to Last – maintains shape, stretch, and performance wash after wash — 100+ cycles strong.

From the Founder of MAN’s SET

“Underwear should do more than just fit — it should work with your body. That’s why we created MAN’s SET Anatomic Underwear. Made from ultra-soft MicroModal, it adapts to your form, keeps you cool, and supports you exactly where you need it. It’s not just comfort — it’s confidence, engineered for every day. Once you try it, you’ll never go back to ordinary underwear.”

Trusted by many

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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.

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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.

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