Columbia Sportswear's Omni-Shade clothing protects you from damaging UV radiation by blocking the majority of the sun's harmful rays, so you can stay out longer. Omni-Shade blocks Ultraviolet A and Ultraviolet B rays (UVA and UVB), helping to prevent sun burn and long-term skin damage through tight weave construction, UV reflectors, and UV absorbing technology.
Unlike SPF (Sun Protection Factor), which is a measure of sunburn reduction from sunblock, and does not indicate any protection from UVA rays. UVA rays are much more harmful than UVB, and are present even on cloudy days. Omni-Shade provides protection from both UVB and UVA rays. Like sunblock, Omni-Shade is given a numeric value to indicate its level of sun protection. Unlike sun block, Omni-Shade does not wear off.
Omni-Wick is the ultimate moisture management technology for the outdoors. Its superior wicking properties move moisture away from the body and enable perspiration to evaporate quickly. During physical activity, increased body temperature causes perspiration. Normally this results in damp, clammy, and uncomfortable clothing (not to mention unattractive). With Omni- Wick clothing, moisture is quickly wicked up into the fabric, and away from the wearer's skin. The moisture spreads out across the surface of the fabric where it quickly evaporates. This wicking/evaporation process keeps the wearer cool and the clothing dry. You stay dry, which helps regulate temperature, prevent chafing and keep you comfortable all day.