UltraSoft Trunk 3.6" Open Fly, Unholy Grinch
Stop fixing your underwear - start focusing on your day
| Size | Waist | Hips | Length | Inseam |
|---|---|---|---|---|
| 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
The Unoly Grinch UltraSoft 3.6" Open Fly Trunks are premium men’s trunks engineered for all-day comfort, natural support, and a bold seasonal attitude. The anatomical inner construction gently separates and stabilizes, keeping you cool, balanced, and comfortable from morning to night.
A spacious triple-layer pouch with horizontal open access offers freedom, convenience, and confident functionality. The mid-rise front prevents abdominal pressure, while the 3.6" inseam delivers the ideal blend of mobility and secure everyday coverage.
Crafted from a high-quality cotton-elastane blend (95% cotton / 5% elastane), the fabric feels ultra-soft, flexible, and breathable, maintaining comfort and shape in daily wear.
Part of our limited Holiday Collection, the Unholy Grinch print brings a mischievous twist to festive style: bold, cheeky, and full of winter personality.
Performance Benefits:
• Anatomical inner design - natural separation and long-lasting comfort
• Large three-part pouch - extra room and easy access with horizontal entry
• Mid-rise front panel - prevents abdominal compression for a relaxed, balanced fit
• Soft 4 cm branded waistband - secure hold without digging in
• Everyday versatility - fits all body types and matches any daily routine
• Festive Unholy Grinch design - playful, bold, and packed with holiday mischief
Get yours now - made for men who want comfort, attitude, and a daring seasonal edge.
*Color and decorative stitching may slightly differ from photos.
UltraSoft Trunk 3.6" Open Fly, Unholy Grinch
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
Recently Viewed Products
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.
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.
