Yep 10kgs it is. You are allowed a slightly bigger bag though at 560mm x 450mm x 250mm as compared to 550mm x 400mm x 200mm with Ryanair Get all the infor you need at aerlingus.com
Thanks Maverick - that what it says on website, just wanted to make sure. Looks like they are better than RA as they allow handbag and small items as well.
Your welcome, I think aerlingus do allow a handbag at the moment but they may well change shortly, It used to be the way of Ryanair but as usual when things get abused they get changed enjoy your break.