[Closed] Killarney and Merino base layer advice!

Firstly, I'm after a merino base layer, nothing to snazzy, £30 ish and was hoping someone would have something to recommend!

and secondly, off to Killarney next week for a few days with a friend, planning on staying in a youth hostel and then just exploring the national park for 2 full days (only there for 3 nights, 4 days). Was wondering if anyone had recommendations on routes/walks to do. The more scenic, the better. Any other recommendations would be great too.

We're flying to cork, and are pretty set on killarney, as we won't have a car and want to go somewhere scenic/outdoorsy, but any other last minute suggestions are welcome!