ONeills Derry Dynamo T-shirt Ladies The O'Neills Derry GAA Women's Dynamo T-Shirt is quite simply a wardrobe necessity. Designed to protect from harmful UV rays whilst keeping you fresh throughout the day with its moisture-management technology, this t-shirt will become your go-to! Fit is true to size Breathable, sweat-wicking and quick-drying fabric Textured panel on the shoulders and back UV Protection Official Derry GAA crest