Men's Base Layers

Stay warm and dry in the harshest conditions with 509’s Active Layering System featuring Cold Armor technology. Pairing 509’s base and mid layers w...

KLIM SIZING CHART Klim Aggressor Pants 1.0 KLIM® - THE LAYERING COMPANYKLIM® engineers a complete array layering solutions for every possible outd...

KLIM SIZING CHART Klim Aggressor Shirt 1.0 KLIM® - THE LAYERING COMPANYKLIM® engineers a complete array layering solutions for every possible outd...

KLIM SIZING CHART We built the Inferno to be one of our most versatile and comfortable pieces that excels at mid-layer performance as well as bein...

KLIM SIZE CHART KLIM Tactical Base Layers are specifically engineered for off-road and dual-sport riders looking for effective low-profile next-to...

KLIM SIZING CHART The Glacier Jacket is a midweight stretch fleece with moisture-wicking technology and heat-trapping collar for added comfort,...

KLIM SIZING CHART Take the ever-popular insulated Override Jacket and remove the sleeves, add in our new eFire system and you get a heated mid-...

KLIM SIZING CHART Add the redesigned second gen Covert GORE-TEX sock to your gear kit and make any pair of boots waterproof. Whether you’re f...

KLIM SIZING CHART The Aggressor -1.0 Long Sleeve provides a level of cooling and comfort never seen before in the powersports industry. KLIM’s seco...

The 509 FZN Base LVL 2 Pant offers mid layer insulation - the secret weapon for warmth and comfort. A comfortable mid layer is built from a polyest...

Stay warm and dry in the harshest conditions with 509’s Active Layering System featuring Cold Armor technology. Pairing 509’s base and mid layers w...

KLIM SIZING CHART Klim Aggressor Pants 3.0 KLIM® - THE LAYERING COMPANYKLIM® engineers a complete array layering solutions for every possible outd...

KLIM SIZING CHART Klim Aggressor Shirt 2.0 KLIM® - THE LAYERING COMPANYKLIM® engineers a complete array layering solutions for every possible outd...

KLIM SIZING CHART Klim Aggressor Shirt 3.0 KLIM® - THE LAYERING COMPANYKLIM® engineers a complete array layering solutions for every possible outd...

KLIM SIZING CHART The Inferno Jogger Pant is one of the most comfortable mid layer pants on the snow, boasting warm, soft fleece fabric and practi...

KLIM SIZING CHART It sounds bold, but this might be the most comfortable shirt you’ll ever wear. The redesigned Teton Merino Wool ¼ Zip retains the...

KLIM SIZING CHART Prepare to experience unparalleled warmth and freedom of movement in any condition with the innovative Aggressor One-Piece 2.0 “E...

KLIM SIZING CHART The heavyweight polyester double-faced fleece Teton Crest Fleece Jacket was designed to ensure heat-trapping comfort for chilly d...

The next evolution of our the 509 Syn Down Ignite Jacket is here to change the game, now with smart clim8® technology and seamless detection activa...

KLIM SIZING CHART The Aggressor Vented Sock takes KLIM’s popular lightweight vented sock and incorporates an all-new technical and performance des...

KLIM SIZING CHART TETON MERINO WOOL BLENDED W/ ACRYLIC, POLYAMIDE NYLON, LYCRA FOR DURABILITY & COMFORT (30% MERINO WOOL, 30% ACRYLIC, 25% ...

KLIM SIZING CHART TETON MERINO WOOL BLENDED W/ ACRYLIC, POLYAMIDE NYLON, LYCRA FOR DURABILITY & COMFORT (36% MERINO WOOL, 31% ACRYLIC, 11% ...

KLIM SIZING CHART TETON MERINO WOOL BLENDED W/ ACRYLIC, POLYAMIDE NYLON, LYCRA, SOFTAIR POLYESTER FOR DURABILITY & COMFORT (36% MERINO WOOL...

KLIM SIZING CHART COOLMAX® POLYESTER, POLYAMIDE NYLON, LYCRA BLEND MADE OF EUROPEAN SOURCED YARNS REINFORCED TOE, HEEL, SOLE TERRY LOOP FOOTBE...

KLIM SIZING CHART The Aggressor eFire shirt adds powered heat elements to the most versatile and comfortable layering system available. Designed...

KLIM SIZING CHART The Echo Wool Fleece Jacket is a midweight performance fleece jacket with engineered stretch for added mobility. The full-zip ...

KLIM SIZING CHART The Glacier 1⁄4 Zip is a midweight stretch fleece with moisture-wicking technology and a stand-up collar for heat-trapping co...

KLIM SIZING CHART The Highline Jacket is a midweight stretch fleece with moisture-wicking performance and heat-trapping comfort. The full-zip fl...

KLIM SIZING CHART The insulated Override Vest is a technical mid layer with exceptional breathability and added warmth for chilly days. The per...

It’s always about to pop off when you’re wearing the 509 FZN Merino Party Suit. This one-piece base layer is made with warm, breathable, temperatur...

With the 509 FZN LVL1 Party Suit, there’ll never be a question of who’s ready for a good time. This one-piece base layer is made with a warm, hard-...

KLIM SIZING CHART The Mojave Pro Gloves top off the ultra-vented Mojave off-road gear line, offering dexterity, control and protection for aggress...

KLIM SIZING CHART The Aggressor -1.0 Brief provides a level of cooling and comfort never seen before in the powersports industry. KLIM’s second gen...

KLIM SIZING CHART The Aggressor -1.0 Pant provides a level of cooling and comfort never seen before in the powersports industry. KLIM’s second gen ...

KLIM SIZING CHART The Solstice -1.0 Biker Short for women provides a level of cooling and comfort never seen before in the powersports industry. KL...

KLIM SIZING CHART The Solstice -1.0 Pant for women provides a level of cooling and comfort never seen before in the powersports industry. KLIM’s So...

KLIM SIZING CHART The Solstice -1.0 Long Sleeve for women provides a level of cooling and comfort never seen before in the powersports industry. KL...

Add the ultimate base layer to your day with the 509 FZN Merino Crew Shirt. Made with a Merino/spandex blend for stretch and all-day comfort, this ...

Every successful day on the sled starts with a good base layer, and the 509 FZN Merino Quarter-Zip Shirt knows this better than most. Made with a M...

Slide on a new level of luxury, because the 509 FZN Merino 180 Boxer Shorts have been made with a stretchy Merino/spandex blend for all-day comfort...