Measurements Pit to Pit : 21 inches Pit down : 19.5 inches Using the same quality and built as the high-performance Aquatek, the Ultratek is designed for women who love to fish, spend time on the water, and also look good while doing it. The Ultratek's Pelagic icon logo graphics stamped on the back and chest make this performance shirt one of the best ways to rock the Pelagic name. Moisture wicking & cooling properties Comfortable and lightweight nylon-stretch fabric Pelagic icon logo back and chest hits Material: 100% Nylon FEATURES 50+ UPF Protection Ultimate protection from the sun's harmful rays. Water and Stain Repellent Prevents absorption of liquids and reduces staining. Ultra Light Fabric Our lightest weight proprietary featherweight fabric.