M's Thermalrunner Reversible Vest

Strategic warmth
40g PrimaLoft® Gold Active Insulation provides core warmth

Multi-condition preparedness
Hyperlight, durable nylon shell is water-resistant and wind-blocking for whatever the trail may bring

Ready for anything
Stows into chest pocket for easy packability

Keep it separated
2 zip hand pockets and a zip chest pocket stash small essentials close at hand

Comfortable coverage
Zipper garage protects chin and neck

Visibility
Signature reflective logos for improved visibility in low light

Zephyr
100% nylon with PFC-free C0-DWR (durable water repellency)

PrimaLoft Gold Insulation Active
100% nylon (45% recycled)

Weight
136g / 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.