Men's Thermal Underwear Set Fleece Lined Cotton Long Johns Navy Blue

Men's Thermal Underwear Set: Fleece Lined Cotton Long Johns Built for Cold Weather Riders

This 2 piece men's thermal underwear set pairs a fleece lined long sleeve top with matching high waist long johns so you stay warm from your first cold morning start to the last mile home. The soft knit cotton outer moves with you while the brushed fleece interior traps body heat, giving you a warm base layer that slips under a riding jacket, jeans, or work clothes without any bulk. In classic navy blue, with your choice of crew neck or round neck top, it is winter underwear made for men who refuse to park the bike when the temperature drops.

Who This Thermal Base Layer Is For

Made for motorcycle riders, commuters, hunters, campers, and outdoor workers who need real cold weather insulation. Wear it as a base layer under leathers or textile gear on winter rides, under coveralls on the job site, or on its own as warm loungewear at home. If you have been searching for long johns for men that are actually thick enough for freezing mornings yet breathable enough for all day wear, this set is the answer.

Materials and Specifications

• Set includes: long sleeve thermal top plus high waist thermal bottoms (2 piece set)
• Fabric: soft knit cotton blend with a plush fleece lined interior
• Color: navy blue
• Neck styles: crew neck or round neck
• Sizes: L, XL, 2XL, 3XL
• Fit: close to body layering fit with stretch; high waist pants stay put under riding gear
• Care: machine washable, keeps its shape and softness wash after wash

Why Riders Choose This Set

• Real warmth: the fleece interior insulates against wind chill at highway speed
• No bulk: thin enough to layer under a jacket and armored pants comfortably
• Breathable: cotton knit lets moisture escape so you stay dry, not clammy
• Secure fit: elastic high waist and cuffs keep everything in place on and off the bike
• Built to last: reinforced stitching stands up to daily winter wear

Pair it with a heated vest or gloves from our heated motorcycle gear collection, or browse the full riding gear collection to finish your winter setup. Fast tracked shipping on every order.

Frequently Asked Questions

Is this thermal underwear set warm enough for motorcycle riding in winter?

Yes. The fleece lined interior traps body heat and blocks the chill that cuts through denim and mesh gear, making it a solid winter base layer for riding in cold weather down to freezing temperatures when worn under proper outerwear.

Does the set run true to size?

The set has a snug base layer fit. If you prefer a looser feel or plan to wear it over another layer, size up one size. Sizes run from L to 3XL.

Is it too bulky to wear under riding gear or jeans?

No. The knit fabric is thin and stretchy, so it layers cleanly under leathers, textile jackets, armored pants, or regular jeans without restricting movement.

What is the difference between the crew neck and round neck options?

Both tops are the same fleece lined fabric. The crew neck sits slightly higher for extra warmth at the collar, while the round neck sits a bit lower and stays hidden under open collar shirts.

Can I machine wash the thermal set?

Yes. Wash cold on a gentle cycle and hang dry or tumble dry low. The cotton knit and fleece lining keep their softness and shape.

Can I wear it on its own around the house?

Absolutely. Many riders use the set as warm loungewear or pajamas in winter. The soft cotton feels comfortable directly on skin for all day wear.