The adjustment mechanisms for the straps are simply made from the WRONG TYPE OF PLASTIC. Like others, my kids mask broke while I was adjusting the strap for its first use. I'm a scuba diver and know how to adjust straps on a dive mask. Speedo uses physical designs that suggest they know what they're doing as they move into this market, but these or horribly engineered.
If these are on sale for even [$], don't buy them. They're just trying to clear inventory and find the pricepoint where you buy it and don't complain. They have to know these are horrible products at this point. Mine was on sale for [$].
We have already gone through two pairs this summer. Very disappointed in this product from Speedo. This goggles are difficult to adjust and break easily at this side, and yes they were adjusted by adults. Would not recommend these at all. However, we love our regular Speedo goggles.