Men's Atom SL Vest from Arc'teryx is an easy-to-line vest for men. The vest is super light and easily compressed into your pack, ready to be gripped when the summer temperature drops. It is worn as an intermediate layer or freestanding and provides moderate insulation, ideal for early morning runs. The Tyono™ 20 shell balances good breathability with wind resistance, and the™ Coreloft insulation is lightweight, compressible and effective. The side panels in the stretch fleece improve ventilation and keeps the fit.\n\n