Cotton knit trousers and tops work well, as do a good pair of walking shoes. Pack some stretchy travel slippers to wear on the plane. WHAT TO PACK Layered clothes work well for Ireland. For warmest days, I pack a couple of cotton blouses with tiny print. These can be hand-washed, hung to dry, and worn again with little noticeable wrinkling.
Natural fibers are both warmer and cooler than synthetics.
Most European countries do not provide them. Travel with a duffel bag and pack an extra flat zippered athletic bag inside to carry gifts and book purchases home. This saves considerable shipping cost. Hotels, many guest houses, most restaurants, fuel stations, gift shops, and supermarkets honor Visa or MasterCard. Also, you will get the best exchange rate by using your card and you have a written record of your purchases.