10 Best Hunting Baselayers of December 2025

• UA Base 4.0 Extreme Baselayer is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme cold
• UA Scent Control Technology to keep you undetected in all pursuits
• Soft, brushed grid interior traps air against your skin, closely managing your body's microclimate to keep you warm & comfortable
• Material wicks sweat & dries really fast
• 4-way stretch construction moves better in every direction

Under Armour

• Quick-Dry, Comfort Stretch Lightweight Knit
• Low-Profile Flatlock Seam Construction
• Drop-Tail Design
• Stretch Thumb Loops
• Offset Seams On Shoulders

SITKA Gear

• NO MORE OLD-SCHOOL SCRATCHY INSULATED UNDERWEAR: Traditional cotton long underwear are simply scratchy and uncomfortable to wear for long periods of time, Rocky thermals are made from a soft, comfy polyester blend so you can enjoy all-day comfort, and your winter adventures never have to end
• FLEECE-LINED COMFORT (WITHOUT THE BULK): Don’t let the lightweight fabric fool you, thanks to the fleece-lined design, this thermal underwear set gives you high-quality warmth that fans say keep them warmer than traditional puffy thermals or wool base layers that leave you feeling strangled or trapped
• NO MORE AWKWARD ADJUSTING THANKS TO ELASTIC SEAMS: Check out the pictures and see how this boy’s thermal underwear set is crafted using elastic seems that keep tops and bottoms from falling down or bunching up (even on long walks to school), and if your family enjoys skiing, snowboarding, or ice skating then Rocky makes a great base layer -- but without the sagging and ‘awkward adjustments’
• MACHINE WASHABLE FOR EASY CLEANUP: While cheap Thermal Underwear unravel in the washing machine after only a few cycles, Rocky uses high-quality stitching for thermal leggings and long sleeve shirts that stand up to the washer -- even with super-active days and many muddy adventures

Rocky

• A unique 2-in-1 base layer with 100% merino wool exterior and 100% LIFA Stay Warm Technology interior
• LIFA: LIFA is the original Helly Hansen base layer made of 100% LIFA fibers, providing warmth and insulation in cold weather. LIFA naturally pulls moisture away from skin and to the outer layer of the garment keeping you warm, dry and comfortable.
• FEATURES: 2-layer construction, Hood for added warmth, 100% Merino Wool exterior, 225g LIFA Merino fabric, Non-itch, Flat lock seams
• GOOD FOR: Camping & Hiking, Climbing & Mountaineering, Trekking, Resort, On Piste, Alpine, Winter, Skiing
• FIT: Regular - Neither slim nor oversized. Regular-fitting garments may be worn over thicker midlayers. Pants will have a standard inseam with a cut that's straight through the leg.

Helly-Hansen

• Package Includes: 1 - Men’s 250g/m² merino wool thermal crewneck top
• SUPER SOFT: 100% all natural superfine 18.5-micron Merino wool ensures comfort all day – no itch! EASY CARE: Mid-weight long sleeve crew top shirt is machine-washable and dryer-safe, so it’s ready when you are for your next adventure. MEN’S SIZE OPTIONS: XS to 3XL.
• BREATHABLE: Keeping you cool in summer and warm in winter, 250g/m2 weight interlock-knit Merino wool can be used as a base layer or mid-layer, but won’t weigh you down. EASY CARE: Mid-weight long sleeve crew top shirt is machine-washable on cold setting and safe to tumble dry on low heat, so it’s ready when you are for your next adventure.
• WICKING & ODOR RESISTANCE: Merino wool’s natural wicking and odor-resistant properties keep you dry and comfortable while active in cold weather. Through the process of wicking, Merino wool is the most breathable fabric and absorbs moisture better than any other fibers. Wicking refers to a fabric’s ability to pull moisture away from your body and keep you comfortable.
• EXCEPTIONAL CUSTOMER CARE: If your MERIWOOL Men’s Crew Top doesn’t perform to your satisfaction, return it to us within 30 DAYS along with proof of purchase for a hassle-free refund, exchange, or replacement. Includes a 1-YEAR limited manufacturer’s warranty, which covers manufacturing and material defects. Washer/dryer safe. For best results: hand wash and lay flat to dry.

MERIWOOL

• 【1 Set Men Thermal Underwear】ViCherub mens base layer underwear thermals provide seven colors for you:Black,Grey,Blue,Charcoal,Christmas Design,Navy,White;Standard US Sizes(S M L XL XXL 3XL).Classic colours for different fashions as a reference.
• 【Ultra Soft and Comfortable】Thermal underwear for men is made of 92% Polyester and 8% Spandex, luxurious and snug, but it doesn't restrict movement at all. The base layer men's set matches neatly and when temperatures are close to or are freezing cold, they keep you quite warm.
• 【Highly Stretchable】Wear-resistant and shrink resistant material. Offers full mobility and freedom of movement, gives you flexibility to move and keep you warm without sacrificing your range of motion or comfort. The long underwear mens can be worn as comfy pajamas on chilly nights.
• 【Good Moisture Wicking】Thermals top and bottom set for men are designed to be thin but effective at insulating body heat. The lightweight material is not just able to retain body heat but simultaneously wick away moisture to maintain a comfortable temperature.
• 【Snug & Easy Care】Our long johns for men are snug designed, that ensures no bunching around your waistline or sleeves to reduce heat loss and better fit when worn under outer layers. Machine Washable, repeatedly washed without shrinking, no fading with the highest grade color fastness, non-irritating. Please DO NOT put them in dryer.

ViCherub

• 🔥Flexible & Perfect Fit: The mens long underwear set use scientific close-fitting design, not tight and more comfortable. They are as soft and fit as the second skin. Highly stretchable for your freedom, movement without restriction. The firm seaming process will not cause tearing while keeping elasticity, it can be used for many years. Our heated long johns for men offer maximum mobility and support of your body!
• 🔥Super Light & Keep Warm: Mens thermal underwear set with classic round neck design, can be worn inside or outside. Compared with very thick underwear sets, ours more light, soft and comfortable. The soft inner layer fleece has perfect heat preservation, will distribute the heat evenly throughout your body, keep the cold air out and preserve heat effectively, enough to block the cold weather.
• 🔥Premium Fabric & Comfortable: Our long johns for men thermal, made of 92% polyester and 8% spandex warm high-density fabric, which has better elasticity and softness while enhancing warmth. We use skin-friendly design, you will feel silky against the skin. Even if you wear our mens base layer all day, you will feel comfortable!
• 🔥Breathable & Refreshing: The thermal shirts for men has been tested, it has good breathability. It is made of moisture wicking and breathable fabric, which will keep you dry with no sticky or clammy feeling. They can absorb the special smell produced during exercise and prevent it from spreading, so that you can be confident all day with our mens long johns thermal set!
• 🔥Great Gift for Him: The men’s thermal gear is perfect for outdoor activities like hunting, fishing, skiing, camping, cycling and hiking. Also good to wear at home or as a base layer under the coats. With romision insulated underwear mens, giving your lover lasting and warm love during the cold morning.

romision

• Men's Cold Weather Leggings: Soft, brushed grid interior traps air against your skin, closely managing your body's microclimate to keep you warm & comfortable
• Stay Warm in the Snow: UA Base 4.0 Extreme Baselayer is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme cold
• UA Scent Control Technology: Keeps you undetected in all pursuits, making these perfect for gym pants, training pants or workout pants
• Flexible Under Armour Men's Leggings: 4-way stretch construction helps these men's leggings move better in every direction
• Be Comfortable While You Play: Material wicks sweat & dries really fast
• Perfect For Any Sports Activity: These leggings don't add any bulk
• You Take on the Cold. We Bring the Heat: The baselayer that’s kept you warm, dry, and focused winter after winter
• Imported

Under Armour

• CARBON ALLOY TECHNOLOGY TO ADSORB ODORS: Our industry leading technology adsorbs odors to keep you well hidden from game.
• ELASTIC WAISTBAND FOR THE BEST FITS: using elastic instead of uncomfortable buttons or zippers will keep you comfy in crouching positions.
• KEEP COMFORTABLE WITH OUR WICKING TECHNOLOGY: draws sweat away from the body to keep you comfortable in the hotter seasons.
• FOR THE MOST SUCCESSFUL HUNTER: ScentLok is the best choice in hunting gear, with it's long lasting line of clothes and accessories for all seasons.
• PRODUCT SPECIFICATIONS: horizontal fly, elastic waistband, stretch panels for mobility, smooth polyester interlock fabric.

Scentlok Technologies

• CARBON ALLOY TECHNOLOGY TO ADSORB ODORS: Our industry leading technology adsorbs odors to keep you well hidden from game.
• ELASTIC WAISTBAND FOR THE BEST FITS: using elastic instead of uncomfortable buttons or zippers will keep you comfy in crouching positions.
• KEEP COMFORTABLE WITH OUR WICKING TECHNOLOGY: draws sweat away from the body to keep you comfortable in the hotter seasons.
• FOR THE MOST SUCCESSFUL HUNTER: ScentLok is the best choice in hunting gear, with it's long lasting line of clothes and accessories for all seasons.
• PRODUCT SPECIFICATIONS: horizontal fly, elastic waistband, stretch panels for mobility, smooth polyester interlock fabric.

Scentlok Technologies