I got a pair when I was at home on vacation after my mom insisted that these were the most comfortable pair of flip flops she has ever worn. My mom has really sensitive feet so I thought sure, I'll try it. Normally I'm pretty resistent already declaring that my trusty Old Navy's were great on the comfort zone. Plus I also alternatively owned a a pair of Havaianas. Boy oh boy though, as soon as you put it on, the Ipanemas feel like butter on your feet. So soft and so comfortable!
Needless to say almost everyone I was with at the beach was wearing a pair!!! :)
Here's a description from their UK site:
Only Ipanema flip flops are made from a unique buttersoft PVC suitable for vegetarians. Specialised moulding creates a sole that’s sublimely soft and guarantees you a perfectly padded underfoot. Industrial residues, painting residues, surplus PVC and the water used in production are 99% recycled. Whether you choose to stroll about all day, or only walk as far as the ice cream stall, you can be sure your feet will be in first-class comfort.
So really, go buy a pair. Your feet with thank you.
For those interested in getting one or two, head over it to their UK site and it ships worldwide for £8.00. Prices start from £9.99 to £20.00.
(images from http://www.ipanemaflipflops.co.uk/)