What Our Gearhead(R) Experts Are Saying:"This pullover is the ultimate in low-bulk insulation. It's so light you barely notice it in your pack, but the warmth-to-weight is unreal. I love using it as a midlayer on active missions where breathability and freedom of movement matter most."We reach for the Vesper Insulated Pullover when weight, packability, and breathable warmth are key. This lightweight midlayer is designed for high-effort alpine pursuits and variable-weather missions where every ounce counts. Its wind- and water-resistant stretch shell moves naturally with us, while VerticalX(TM) ECO SR insulation offers body-regulating warmth that never feels stuffy or bulky. A deep center front zip allows easy venting and layering, and the adjustable hem and elastic cuffs keep heat locked in. Whether worn under a shell or on its own, this pullover delivers minimalist performance without compromise.