Simms Lightweight Baselayer TopSimms' Lightweight Baselayer Top is the essential next-to-skin layer for building a rock-solid foundation that prioritizes all-day mobility, warmth and wicking.FeaturesJersey knit brushed polyester combined with sustainable odor control and speed dry moisture management for maximum next to skin comfortRaglan sleeves for optimal fit and movementFlatlock seam construction for next to skin comfortBody - 192 gsm 92% spun polyester, 8% spandex finished with HeiQ Fresh odor control + HeiQ Speed Dry