So far I have only purchsed the Flex Fidget Breather (acutally, several of them for gifts as well as for myself), which I find to be a very well-designed and high quality product. Because there was an errror in the packing of one of my orders, I needed to interact with customer service and my experience with that was excellent as well. So all of that is what gets my five stars. I would have prefered to have recieved an email receipt with order updates directly from Komuso rather than via Shopify, however. To keep track of my order on Shopify, I found I had to purchase the app, which I did. But when I explored that app on my phone I became uncomfortable with its privacy/security and the diluge of addeitonal ads/ pressure to purchase more stuff that I was subjected to each time I opened it. So I deleted the app, minus the cost of the app, and now find myself in the dark with no way to check on the progress of my Komuso order. So, I love Komuso. But NO stars for Shopify.