Minus33 Merino Wool Clothing Woolverino Men's Midweight Flyless Running Tight
Minus33 Merino Wool Clothing Woolverino Men's Midweight Flyless Running Tight
Minus33 Merino Wool Clothing Woolverino Men's Midweight Flyless Running Tight
Minus33 Merino Wool Clothing Woolverino Men's Midweight Flyless Running Tight
Minus33 Merino Wool Clothing Woolverino Men's Midweight Flyless Running Tight
Minus33 Merino Wool Clothing Woolverino Men's Midweight Flyless Running Tight

Men's Wool Flyless Running Tight


Regular price $84.99 Save $-84.99
Shipping calculated at checkout.

Charcoal Gray

Searching for the perfect bottoms so you can stay active through the winter? Our Woolverino Flyless Running Tights are designed with you in mind. While everyone else is bundled up inside, you're keeping up with your routine. The extra-wide flyless design and extended gussets are designed to move with you, while also making sure you don't look like you're running around in your underwear. Our Midweight fabric is perfect as a solo layer, or for layering up when you need wind or water protection. Choose merino wool for the best winter experience.

  • Fiber Content: 85% Merino Wool, 13% Nylon, 2% Spandex
  • Knit: 235 g/m2 Midweight Interlock Knit
  • Microns: 18.5 Micron Fibers
  • UPF Rating: 50+
  • Total Easy Care: Machine Wash and Dry
  • Wool Source: Australia
  • Imported.
    • Mid Rise: Waistband sits a little below the belly button
    • Athletic Styling: Seam design gives you more of the sport legging look
    • Pocket: Small 3 1/2 in x 2 1/2 in pocket on left hip holds a card, cash, or keys
    • Covered Waistband: Merino next to your skin
    • Flyless: For times you don't want to look like you're wearing underwear
    • Gusset: Reduces stress in the crotch area
    • Flat Lock Seams: Prevents Chafing
    • Layer Type: Base Layer
    • Fit Type: Athletic - Skin tight, compression style fit
    • Model features: The model in black is 5'10 / 150 lbs wearing a medium.
    • Runs True to Size - If you like a looser fit, try sizing up
    • Weight: Size Large = 0.5 lbs. (226 grams)
    • Style #: 4300
      • Ideal Seasons: Spring, Fall, Winter
      • Activities: Everyday Wear, Hiking, Camping, Biking, Running, Fishing, Hunting, Snowsports
      • Temperature Recommendations: 30°F to 0°F while active, 30°F to 60°F while inactive - Learn More

        Washing and Drying Instructions - Learn More

        • Turn Inside Out
        • Machine Wash Cold: Gentle cycle with like colors
        • Detergent: Mild or wool-specific
        • Tumble Dry: Low heat
        • Storage: Place in an airtight container when not in use for long periods of time
        • Do NOT Use: Fabric softener or bleach!
        Product Story


        Woolverino's Core Spun Technology brings you a merino garment that is durable, athletically fitted and high-performing. Warm when you need it. Cool when you don't. Nylon inner core offers strength, elasticity, resiliency, and durability. Merino Wool outer sheath provides insulation, moisture-wicking, and UV protection.

        Couple Wearing Minus33 Midweight Merino Wool Base Layer Outfits

        Merino Wool

        Versatile and comfortable, our Merino Wool will always have your back. Designed as a three-season garment, our Midweight works great as either a base or mid layer.

        Midweight Details

        Our Midweight styles have all the same natural qualities as our Lightweight Merino Wool, with greater insulation. Minus33 Merino Wool Clothing is perfect as a base layer for a day on the slopes or as an emergency pullover when a cold front rolls in just before you summit.

        235 g/m2

        Interlock Knit

        18.5 Micron

        100% Merino Wool (Woolverino 85% Merino Wool)
        UPF Rating 50+

        Compare Weights


        Activities: Hiking, Camping, Lifestyle, Snowsports, Hunting, Fishing.

        Seasons: Spring, Fall, Winter.

        High Activity Temperatures: 0°F to 30°F

        Low Activity Temperatures: 30°F to 60°F

        Learn about Layering

        Why Merino Wool?

        Moisture Wicking

        Minus33 Merino Wool regulates the amount of moisture on your skin by absorbing any moisture or sweat on your body. Then, the absorbed moisture evaporates out of the fabric into the atmosphere.


        Merino Wool fibers naturally reject any bacteria in moisture or sweat as it is wicked away, so foot fungus and smelly odor will not be a problem while wearing our products.

        Insulates When Wet

        Wool will absorb up to 30% of its weight in moisture without feeling wet or clammy. If you do get wet, wool will insulate you better than cotton or polyester materials.

        Fire Resistant

        Merino Wool insulates against high temperatures and does not readily catch fire. If it does, it self-extinguishes. When Merino burns, it doesn’t melt and stick to the skin like synthetic fabrics do.

        UV Protection

        Don’t worry about sunburn on a sunny day summiting a peak. Lightweight layers have a UPF rating of 25. Midweight and Expedition have a UPF rating of 50+.


        Merino Wool has a low environmental footprint and naturally returns to the elements. Shear a merino sheep in the morning, and in the afternoon they’re happily nibbling their way towards renewing next season’s clip. 



        Learn More

        Customer Reviews

        Based on 10 reviews
        A Great Base…

        A Great Base Layer. Fit Us More If A Skin Tight Compression Type Fit In The Legs With Enough Room And Stretch Around The Upper Thighs And Waist. A Very Nice Design Without The Fly So It Doesn’t Look Like You Are Wearing Long Underwear. I Wear Size 32x30 Jeans And Size Medium Is A Perfect Fit On Me.

        Beau Dusseault
        Nice and warm

        I have used these in hiking and running. Main layer with shorts on for running, into the mid-20s. Base layer with thin hiking pants on in similar temps. Very warm. Excellent quality and comfort.


        Thank you for the great review, keep warm!

        -Melinda W.

        olisakwe onuegbu
        stress free running in cold weather

        I have never experienced this level of stress free running and comfort whilst running in cold weather until I got the Flyless running tight. It is a must have item.


        We are very happy to hear how well our Flyless Running Tights are working out for you. Happy running!!!


        Good for older folks also

        These pants are great for wearing around the house on those chilly days. A simple cold rinse and cool tumble dry freshens them up and they stay the same size. Of course you can add additional pants over them for more warmth or doing heavy chores if needed. The XXL is a good fit for those who need more room for the mature body. A good purchase.

        P Thomson
        Great Fit

        Great fit but not as warm as I'd like.