We ordered a pair of the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Zhuanglin-Men-s-Quick-Drying-Aqua-Water-Shoes/dp/B077B9PSND/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Zhuanglin Men's Quick Drying Aqua Water Shoes</a>&nbsp;for my husband. Reviews said they ran large so we ordered half a size small. It's good that we did! Because they were too small he paused in trying to put them on just as he felt something sharp inside the shoe scrape across the top of his foot!  So he thankfully stopped trying the shoe on and checked to see what was scraping his foot.

There were a number of sharp or pointy "tabs" (uploading a picture!) of varying lengths in the shoes sticking out from under a lining below the top "tongue" of the shoes. They look like small nylon tabs like the kind you find on backpack straps, but the edges were hardened (it looks like they were "cut" at the factory by something hot, melting the edge into a hard/sharp surface) enough to pierce or cut skin.

One or two of these tabs in the other shoe he didn't try on were shorter and "pointy" enough to pierce like a needle instead of scrape/slice like the other tab edges.  THIS IS DANGEROUS! He said the smaller sharp edged tabs that stay under the lip of the lining can go unnoticed until the lining pulls back due to foot movement and then it can poke or slice the foot. If that happened while swimming it could be disastrous.

He says it looks like a manufacturing quality problem and is very disappointed because of all the other good reviews.

Edit: There are a number of these exact same water shoes from different brands right now on Amazon's Lightning Deals. Instead of the hassle of exchanging we're just returning these and due to so many other good reviews taking another chance with a different brand.

I'm also uploading a photo of one of the longer sharp-edged "tabs". They're hard to take pictures of because they're attached to the underside of the interior of the "tongue" part of the shoe.