When the weather goes from sunny to cloudy to spitting rain to humid to sunny and back again all within the span of your long distance trail race, the Salomon Men's S Lab Hybrid Jacket is ready to adapt in the blink of an eye. The innovative Quick Stash waist allows this jacket to be zipped down most of the way then stowed securely into its hem in a roll around your waist, ready for deployment when the clouds come back. No need to waste time when you've got PR's to beat. The waterproof breathable panels and skin fit hood help when the weather rolls in, while breathable panels and underarm ventilation prevent overheating. The active fit and stretch throughout the entire jacket's fabric make pumping your arms on the uphill sections comfortable. The glued seams on the waterproof panels keep water from sneaking through the cracks, and reflective branding on front and back gives hits of awareness when the sun sets.