The i-Run team says
Technologies
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Omni-Wick
This technology wicks away sweat. It transfers moisture to help you stay dry and at the right temperature. Ultra-light, its material gives you great freedom of movement during intense activities.
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Omni-Freeze ZERO Ice
This technology uses perspiration to lower the temperature of the fabric. It speeds up drying time. You also get a pleasant feel. It is designed for long-lasting effect.