O'Neills Dublin Training Jersey Junior Discover the O’Neills Dublin Junior GAA Short Sleeve Training Top. Crafted from our high-performance Koolite fabric, this jersey utilises catch, move and release nanotechnology to transport moisture away from the skin keeping you dry and comfortable as you cheer on Dublin GAA. High Performance Koolite Fabric Ribbed Collar Breathable, Sweat Wicking & Quick Drying Official Dublin GAA Crest