Chill river tank is a fun sleeveless top with back venting and our super-cooling, wicking fabric for hot, long days Comfort stretch, Omni-Wick, Binding at collar & armhole Made with Omni-Freeze: Helps you feel cool and dry with accelerated wicking and next-to-skin comfort in moderate to hot conditions Active fit ensures full range of motion, back length: 28 inches, Shell: 89% polyester, 11% elastane Contents: 1x Columbia Women's Chill River Tank II, Colour: Collegiate Navy (Blue), Size: XS Keep your chill when temperatures rise in this short sleeve dress with cooling technology and sweat wicking fabric to help draw moisture away from your skin and keep you feeling cool and fresh all day. The comfort stretch fit and soft collar and armhole binding move with you for a flexible fit.