Once upon a time, I swore by the quality of Rider. When they are new, there is no rival. The gel in the sole is much more comfortable than average running shoes. You can walk for kilometers without any problem of vibrations!

However, they always wear out on the right side of the front inner part of the strap. And much later on the left. From the 3 years they used to last 6-7 years ago, we now go down to 1-1.5 years without much exposure to sea, sun, and salt. Most of the time, the slippers are used indoors.
Most likely, the frequently recycled material is to blame, as it "oxidizes" quickly and becomes more fragile, just like most modern plastic objects.
Avoid last year's stock products in shoes, etc., because they have a much shorter useful lifespan.

In the first month that I got them, and this winter to go out from training, the plastic broke in the middle, very poor plastic quality. I glued it and used it inside the house, and in one year it broke again, both from the sides and from the middle. You can't take it to any rocky beach