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Men's Quest Shorts
$60.00
$15.00
CYCLING BASE LAYER GUDIE
THE LAYER YOU NEVER SEE.
It sits closest to your skin and does the hardest job: moving sweat away before it can chill you. Get this layer right and every layer over it works better.
SWEAT IS THE PROBLEM. NOT THE COLD.
A base layer regulates temperature by managing moisture. Wet fabric against skin pulls heat away fast, which is why riders get cold on descents even in warm gear. A base layer moves that sweat off your skin and into the layers above, where it can evaporate. In summer it keeps you cooler and drier. In winter it keeps your insulation dry so it can actually insulate.
QUICK COMPARE
CHOOSE BY SEASON
Sleeve length is the fastest way to narrow it down.
| Sleeveless | Short Sleeve | Long Sleeve | |
|---|---|---|---|
| Best For | Peak summer heat | Spring, summer, mid-season | Fall and winter |
| Temperature | Above 75°F | 50 to 75°F | Below 50°F |
| Primary job | Maximum ventilation | Wicking with light coverage | Warmth plus wicking |
| Wear it | Under a jersey, or alone indoors | Under any jersey | Under a jersey and shell |
FABRIC
MATERIALS COMPARED
| Synthetic | Merino Wool | Merino Blend | |
|---|---|---|---|
| Wicking | Excellent | Good | Excellent |
| Warmth for weight | Moderate | Excellent | Very good |
| Odor resistance | Treated | Natural | Natural plus treated |
| Dry time | Fastest | Slower | Fast |
| Best for | Hard efforts, hot days | Wide temperature swings | All-round, do-it-all |
Our blended base layers place polyester against your skin to move moisture and Merino on the outside to regulate temperature and resist odor, so you get both behaviors in one garment. Warm-weather styles use In-R-Cool® to improve thermoregulation.
FIT
SEE THE SIZE AND FIT GUIDE
SNUG, NOT TIGHT.
A base layer has to touch your skin to work. If there is air between the fabric and you, sweat has nowhere to go and the layer does nothing. Aim for a second-skin fit with no bunching at the waist or shoulders, and no compression that restricts breathing. If it wrinkles when you are in the riding position, size down.
LAYERING
EXPLORE THE WINTER LAYERING GUIDE
BUILD THE SYSTEM.
Start with a base layer against the skin, add a jersey, then add a shell when wind or rain arrives. Three thin layers beat one thick one, because you can shed or add as the ride changes. On long descents after a climb, expect to want more than you did on the way up: a packable shell, a skull cap, and full-finger gloves.
KEEP READING
Related Guides
There's no such thing as bad weather, only bad gear. The Ride 365® Climate System keeps you at your optimal temperature in any conditions.
Cycling Base Layer FAQs
What does a cycling base layer do?
A base layer moves sweat off your skin so it can evaporate from the layers above. That keeps you cooler in heat and warmer in cold, because wet fabric against skin pulls heat away from your body far faster than dry fabric.
Should a base layer be tight or loose?
Snug. A base layer has to touch your skin to move moisture, so any air gap makes it useless. Aim for a second-skin fit with no bunching at the waist or shoulders and no compression that restricts breathing. If the fabric wrinkles once you are in the riding position, size down.
Do I need a base layer in summer?
Yes, and it is counterintuitive. A sleeveless or short sleeve base layer pulls sweat off your skin and spreads it across a wider surface to evaporate, which cools you more effectively than bare skin under a jersey. Warm-weather styles use In-R-Cool® to improve thermoregulation.
Merino wool or synthetic: which is better?
Neither wins outright. Synthetic wicks fastest and dries quickest, which suits hard efforts and hot days. Merino regulates temperature across a wider range and resists odor naturally, which suits variable conditions and multi-day trips. A Merino blend places polyester against the skin for wicking and Merino on the outside for regulation, so you get both behaviors in one garment.
Can I wear a base layer on its own?
Yes, and it is a common setup for indoor training, where there is no wind chill and airflow matters most. Outdoors, wear it under a jersey so the jersey can pull moisture onward and give you pockets and sun coverage.
How should I layer a base layer for winter riding?
Start with a base layer against the skin, add a thermal jersey or mid layer, then add a wind or water shedding shell. Three thin layers beat one thick one because you can shed or add as the effort changes. Dress so you feel slightly cool at the start and add a packable shell for descents.
How do I wash a Merino base layer?
Cold wash on a gentle cycle and hang to dry. Skip fabric softener, which coats fibers and kills wicking, and skip high heat, which shrinks wool and degrades elastic. Merino resists odor naturally, so it usually does not need washing after every ride.