ONeills Mourne Shorts Boys. ONeills Mourne Shorts BoysTrain in comfort with these ONeills Mourne Shorts. Constructed from a lightweight, breathable fabric with in-built catch, move and release moisture management technology to regulate body temperature, keeping you cool and dry, they are also crafted with an elasticated waistband with drawstring for a personalised, secure fit. ONeills branding and a striped design completes the look.> Shorts> Elasticated waistband> Internal drawstring> Koolite technology> Breathable> Lightweight> ONeills branding> 100% polyester> Machine washable