Here's what other sites are saying:
The Mont Bell Tachyon Jacket is nearly imperceptible, while packing to the size of a candy bar. The Ballistic Airlight nylon utilized here is a wispy 7 denier fabric capable of trapping hard earned body heat next to your skin, while shielding you from all but the strongest of winds. Polkatex treatment resists gentle precipitation just long enough to grant you the minutes necessary to find shelter as the storm approaches.
Weighing only 1.4 oz. and packing to the size of a candy bar, Montbell's water-resistant Tachyon Jacket utilizes a wispy 7-denier fabric to trap your body heat and shield you from all but the strongest of winds.
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