OMNI-FREEZE ZERO: Blue rings react with sweat to lower the temperature of the fabric so you feel cooler, while it wicks away moisture. OMNI-SHADE: Be safe and protected. Omni-Shade blocks UVA and UVB rays to help prevent sunburns and long-term skin damage. The tight weave construction with UV absorbent yarns block the full spectrum of harmful UV rays. ADVANCED TECHNOLOGY: The Columbia Women's Chill River Short guard against sun damage thanks to the built-in UPF 50 rated material, while it?s super-cooling fabric wicks away moisture and perspiration to keep you cool on the hottest days. COMFORTABLE SHORTS: With a regular fit and 4? inseams , these shorts are made from our super-cooling, sun protecting materials ? that offer ultimate comfort during any hot outdoor activity. BUILT TO LAST: Columbia?s attention to detail is what sets our apparel apart from others. We use only the highest quality materials, expert craftsmanship, and durable stitching. This is a cool pair of shorts you will enjoy for seasons to come.