The only problem with a windshell this light and packable? It literally disappears in my pack. The force-field-thin, seven-denier nylon fabric, combined with a pocketless pullover design, means the Tachyon squishes into the smallest spaces.
On hikes in the Rockies and California’s Trinity Alps, it blocked wind and shed light rain like a heavier shell (MontBell rates the DWR at 100 washes; we haven’t seen any drop-off after nearly six months of use). Like most unlined nylon shells, the fabric can feel clammy next to skin. Bonus: A hood with drawcord enhances protection. Add the Dynamo Wind Pant for $69.
Ultralight protection from moderate wind and light rain
> Dennis Lewon (other tester: Jon Dorn)
> Duration April to Nov.
> Locales/conditions CA, CO, WY; 30°F-60°F, sleet, winds to 40 mph