Edited on 6/6/24: Like other reviewers have said, the customer service is fantastic. I didn’t even request a refund for the failed stress balls, but the seller reached out to offer a refund, a replacement, and asked for the batch ID for quality control. This shows they really care about their customers. I’m giving them an extra star for the great customer service, and I’ll add another if the replacement batch lasts longer than the last one. I loved the texture, but they deflated within a month of use—better than the other stress ball I bought, which only lasted a few days before exploding. At least these just deflated without bursting. I’m giving them three stars because they were nice while they lasted, but they didn’t last very long.