Sitka Heavyweight Bottom Size:M A lofted micro-grid fleece backer

A lofted micro-grid fleece backer adds lightweight insulation

Scent-free Insect Shield® treatment repels mosquitoes

Crafted with precision-machined 6061 aluminum and stainless steel

Permanent Polygiene® Odor Control Technology neutralizes odor by stopping the growth of odor-causing bacteria and fungi

Thoughtful features like dedicated storage pockets

Sitka Heavyweight Bottom Size:M A lofted micro-grid fleece backerThe Heavyweight Bottom is a foundational next to skin baselayer that keeps the lower limbs warm during long periods of frigid inactivity while wicking moisture when on the move. With a comfort stretch fleece for warmth and channeled construction for added breathability and moisture management, the Heavyweight Bottom is perfect for cold weather days spent in a layout blind, stand or glassing in the backcountry.