Top Description Winter protection without the bulk – Janji's Thermalrunner Insulated Jacket features targeted insulation for warmth where you need it, and only where you need it. Read more Sizing Grace is 5'1" // she wears size XSMarissa is 5'9" // she wears size S Regular fit, Size Chart features Strategic warmth Targeted panels of 40g PrimaLoft® Gold Active Insulation provide warmth where you need it most Multi-condition preparednessHyperlight, durable nylon shell is water-resistant and wind-blocking for whatever the trail may bring Ready for anythingStows into chest pocket for easy packability Secure fitBungee hem allows for an adjustable fit on the fly, reducing exposure in windy conditions Keep it separated2 zip hand pockets and a zip chest pocket stash small essentials close at hand Comfortable coverageZipper garage protects chin and neck VisibilitySignature reflective logos for improved visibility in low light materials + specs Zephyr100% nylon with PFC-free C0-DWR (durable water repellency) PrimaLoft Gold Insulation Active100% nylon (45% recycled) Weight136g / 4.4oz (M’s Medium) Garment made in Vietnam CFM is the rating that measures how windproof a fabric is - 0 is totally windproof. With a CFM of 16, our Zephyr fabric cuts most wind while staying highly breathable - ideal for running performance. full-bleed Highlights CP Title: Zephyrunner Jacket Header: Breathable wind protection Description: packable wind shell with unrivaled breathability Best for: wind, travel Fit: classic Designed for: 45~70 Shop the: Zephyrunner Jacket