Built for lightweight warmth and cold-weather layering, the women's Heated Baselayer Bottoms are a heated baselayer for the lower body, made for skiing, hiking, outdoor work, brisk walks or jogs, and everyday cold-weather wear — worn under pants or outer layers, or on their own as standalone leggings. This bottom uses a liner-free construction to reduce bulk and create a softer, more flexible next-to-skin feel. A 3-zone heating system covers the knees and core, while the streamlined fit makes them easy to layer under pants without getting in the way of movement. Worn with the 1/4 Zip Heated Baselayer Top, they complete a heated base layer set that helps create warmth where you need it most.

Highlights                        

• 3 heating zones located at the left & right knees and core
• Soft brushed stretch fabric that feels smooth against the skin
• Wide high-rise waistband for a secure, supportive fit
• Flatlock seam construction reduces friction and chafing
• Ergonomic paneling follows the body's natural shape for a streamlined fit
• Reflective logo print at the back waistband for low-light visibility

Feature Details

• 3-zone heating across the knees and core delivering targeted warmth to areas that stay cold during extended outdoor activity.
• Soft brushed stretch fabric that feels smooth against the skin, bringing comfortable warmth without unnecessary bulk.
• A wide high-rise waistband creates a secure, supportive fit that stays comfortable through extended wear.
• Flatlock seam construction reduces friction and chafing, making the baselayer easier to wear for long periods.
• Ergonomic paneling follows the body's natural shape for a streamlined, supportive fit that moves comfortably under outer layers.
• A reflective logo print at the back waistband adds subtle visibility when worn as an outer layer in low-light conditions.

Heating System

Heating Performance

• Carbon fiber heating elements
• 3 heating zones (left and right knees, and lower abdomen)
• 3 adjustable heating settings (high, medium, low)
• 7.5 hours of heating (high for 2.5 hours, medium for 4.5 hours, and low for 7.5 hours)
  

Battery Performance

• 7.4V output for fast preheating
• UL, CUL, CE, FCC, and RoHS certified for safety and quality
• Fully charges in 2 hours with a 20W USB-C charger (not included)
• Supports faster charging with 24W USB-C power delivery
• USB-C charging cable is included
• Capacity: 5075 mAh/7.4V/37.5Wh
• Weight: 6.5 oz (185 g)
  

Specifications

Fit and Construction

• Fit: slim fit; ankle length
• Weight: 15.2 oz (430 g) for size M
• Pocket: one outside battery pocket

Material

• Shell: 79% nylon, 21% spandex

Care

• Machine wash cold, gentle cycle
• Use a mesh laundry bag
• Do not bleach
• Line dry
• Do not iron or dry clean