R.U. Outside has been doing base layer for years, and it just keeps getting better. The Thermolator™ base layer combines modern performance technology with old school comfort, resulting in unmatched functionality. RetroTek™ fabric creates air pockets for enhanced insulation, while remaining lightweight and comfortable. Inherent stretch gives athletic fit and allows complete freedom of movement. Thermo-regulation retains warmth while dispersing moisture, keeping you dry, warm, and out there longer. 

• Thermo-regulated RetroTek™ fabric creates air pockets for enhanced insulation while remaining lightweight.
• Highly breathable and fast drying
• Top features drop tail for extended coverage when riding
• Extended neck provides coverage and warmth
• Flatlock seams for comfort
• Antimicrobial
• Colors: Men’s - Black w/Silver stitching; Women’s - Black w/ Pink stitching
• Men's Tops: Black w/Silver stitching
  MD (chest 38-40), LG (41-44), XL (45-48), XXL (49-52)
• Women's Tops: Black w/Pink stitching
  SM 4 - 6, MD 8-10, LG 12-14, XL 16-18