Most spa slippers are ultra-durable and long-lasting if they are well maintained and properly stored. So, yes, they are reusable. You also need to take the utmost care while machine or hand washing these spa slippers. And dry them according to package instructions.
For those of you who prefer to throw away their slippers after extreme wear and tear, can opt for disposable slippers. Most of them come in six pairs and above. So you won’t run out of them soon.