Purchased these birkenstocks to get my husband out of his trainers during the summer. He has had nike pool sliders before but they are not adjustable and quite basic. He has found these very comfortable and more stylish during the day & evenings during the warm weather - so a success and highly recommended.
My only negative - if you can call it that - is the sizing. He normally wears a UK size 10 or 11 in trainers, shoes, etc so we ordered both sizes but they were huge. We checked the actual size marked in the shoes just in case then sent them back & tried a UK size 9 which are a perfect fit. Luckily we ordered from Amazon themselves so had free returns or it would have been very expensive. These are very good value online so it may be worth trying some instore for the correct size before buying online.