Celrien | Thermaflux Fleece Lined Thermal Underwear Set

Freezing morning bike commutes often turn bitter when cold winds cut straight through everyday trousers and jackets.

Bulky winter layers tend to bunch around the knees and bind at the shoulders every time you lean over the handlebars. This two-piece baselayer hugs the contours of the body closely to sit flat under work pants, commuter trousers, and windbreakers.

• Zero-bunch close commuter fit
• Brushed fleece interior lining
• Four-way active stretch knit
• Breathable anti-stuffy ventilation

Smooth Pedaling Articulation
Multi-directional elastic knit moves naturally with continuous knee and hip motion. The fabric snaps back into place rather than bunching behind the knees during fast cadences.

Soft Insulating Interior
Brushed interior pile holds trapped body warmth right against your skin. The set carries a specification rating down to 5°F for cold morning routes.

Low-Bulk Commuter Profile
A streamlined compression-style cut slides effortlessly under slim commuter jeans and button-down shirts. Flat, close-fitting hems prevent friction under snug trouser seams and cycling packs.

Active Moisture Dissipation
The knit structure actively breathes as your heart rate climbs on steep bridge climbs and long sprints. Heat circulates cleanly instead of building up damp clamminess on your skin.

Details

• Set Includes: Long-sleeve top and long bottoms
• Material: Polyester and elastane
• Fabric Type: Knit
• Lining: Fleece
• Fit: Tight-fitting
• Colors: Black, Beige, Gray
• Sizes: S - 3XL