Go Game Smart Touch Sliotars GAA Hurling Balls 12 Sliotar One Dozen Pack. The Smart Touch Sliotar is the third in the range of GAA Go Games Sliotars and is used by Under 10s – U12's. This sliotar is the same size of a size 4 sliotar and is designed to enhance and develop the skills of both hurlers and camogie players of that age. This sliotar is the next stage up from the Quick Touch Sliotar. Softer and lighter sliotar Designed for under 10's – under 12's Stage 3 in the GO range.