Light insulation, seamless comfort, and full-arm coverage in a long-sleeve base layer complete with a female-specific cut for the colder conditions encountered in late fall and early spring.

For maximum warmth and comfort on winter rides, we turn to the ASSOS Ultraz Winter Long-Sleeve Skin-Layer. Built from a stretchy wool-polypropylene blend, this long-sleeve baselayer helps block wind and regulate our core temperature so we can stay out longer in the worst winter conditions.

A long-sleeved base layer tuned for the cold, demanding conditions of winter riding, featuring an insulating knit structure and seamless construction to keep you dry and insulated from the base up.

The Castelli Bandito Wool Long-Sleeve Baselayer is designed to keep you warm and comfortable during your cold weather rides. Built with a Merino wool and recycled polyester blend, this baselayer wicks away moisture while keeping your body temperature regulated.

Maximum insulation and moisture management for cold rides, to layer between a base layer and a jacket.

When there's a bite in the air, we kit up with the Flanders 2 Warm Long-Sleeve Base Layer. This top's silky warmth stops the chill from reaching our bones, while its mesh underarms and wicking prowess make sure we don't overheat.

In cool conditions the mesh construction gives the warmth of wool but won't wet out on high-intensity rides. Merino wool mesh mixed with nylon for strength and elastane for stretchMinimalist finishing at collar, wrist, and waist for minimal bulkReglan sleeve to avoid seam on shoulder under bib...

Cold sweat that remains on the skin during high-speed descents in late-fall and winter can immediately take the impetus out of pursuing further base miles, if not leave you shivering for some time. Castelli's Prosecco Tech Long-Sleeve Base Layer is a discreet and useful tool at managing...

A proven favorite among endurance competitors, this long-sleeve baselayer jersey is designed for racing and high-intensity workouts in mild to cold winter conditions

Active Intensity Long-Sleeve Crew Neck Top - Women's