The REI Silk long underwear bottoms are smooth, soft and incredibly comfortable. They'll help keep you warm on a cold day and they work great under additional layers.
Features
Lightweight, breathable, pure silk jersey keeps you dry and warm
Wide, self-fabric elastic waist, seamless sides and rib-knit cuffs provide a comfortable fit throughout
Fabric is substantial yet thin enough for everyday wear under jeans or casual pants
Hand wash warm and lay flat to dry; do not bleach or iron