Born from science - not the freezer.

OMIUS and its patented evaporative cooling technology provides peak performance and is trusted by world class runners, triathletes, and endurance athletes. How It Works - unlike other cooling technology which relies solely on chilling or freezing cooling elements and inserting them into bulky, heavy, cumbersome gear - our lightweight and ergonomic cooling system requires only three things: water, airflow, and skin contact. OMIUS will keep you cool, for the entire session.
1) Water. The cooling effect is powered by the evaporation of water from the cooling blocks. Wet the cooling cubes before your workout or race and every 20 minutes or so throughout the effort. We carry a hand-held water bottle or splash water from aid stations on the cap during a race.
2) Air Flow. The cooling effect requires air – whether from walking, jogging, or running outside – to pass over the cooling bricks. Indoors, a small fan works to power the effect.
3) Skin Contact. The cooling pieces must be directly in contact with your skin. Remove any hair from beneath the pieces before your workout or race.

Proper care instructions
The cooling pieces are fragile – like the lenses on your favorite sunglasses. Be sure to store them in their protective case between workouts.
Gently handwash cooling cubes in between workouts or sessions to remove salts and other impurties.
Use a soft soap - dishwashing soap is perfect - and rinse thoroughly.
Allow to dry thoroughly and before you return them to their case.