No Power Source, Minus 9 Degrees: We Built the Ultimate 'Cooling Gear' for Scorching Summer Rides

Is a wet-cool vest the kind you soak with water to use? How long does the effect actually last?

A series feature that goes this deep testing combinations every year — even with similar content annually, I always end up reading it anyway.

Layering a quick-freeze inner, full mesh, and air-through all together — wouldn't that just end up bulky and hard to move in?

If layering cooling gear actually helps prevent heatstroke, that's a life-or-death matter for summer riding, so I want to take it seriously.

No power required and it gets down to minus 9 degrees — impressive that an evaporative-cooling type wet vest can cool that much.