Clip-on sunglasses

Anyone know where to buy clip-on sunglasses?

I was just into specsavers a week ago buying new glasses when I came across a handy pair of clip-on sunglasses. They were shaped a little bit like the below pic (link) but more round and thinner framers - and not ray ban. I would really love to find a pair for this coming weekend as I'm going away and it's super inconvenient bringing prescription sunglasses. I've looked online but I'm hesitant to buy anything as I don't know the exact specs of my new specs (lol) because I haven't picked them up from specsavers yet. I've looked on the website for most of the major sunglasses sellers (sunglasses hut etc) and can't find anything.

Anyone know where in Dublin I can find these this week?

side-note: the reason I didn't just buy them in specsavers was that they came with the actual glasses which I wasn't willing to buy. And the shop assistant was a very unhelpful man who wouldn't even try to think about where I could buy them separately.

iamwhoiam

Boots have them

http://www.boots.com/boots-flip-up-sunglasses-large-10174403

iamwhoiam

iamwhoiam wrote: »

Boots have them

http://www.boots.com/boots-flip-up-sunglasses-large-10174403

Thanks but flip-ups aren't what I'm looking for.