We recommend you to choose your regular size. If you have a wide feet, you could choose a half size up. Feel free to contact COSY ISLAND customer support for more detailed assistance.

Definitely, we made to fit all! We adopt stretchy and elastic knit materials fit different widths of feet & different circumferences of ankles. Contact Cosy Island customer support for more assistance on choosing your right size!

We currently only offer up to size 10. If you require larger sizes, leave us a message and we will consider developing them in the future. Please stay tuned!

I'm sorry, we do not offer shoes for narrow feet at the moment. You could contact our customer service and they will provide you with more guidance on selecting the right size for you.

Absolutely! We incorporate a cushioned insole for arch support. We have great amount of customers with flat feet and plantar fasciitis that have tried these sandals, and they had positive feedback afterwards!

We offer FREE standard shipping to most countries and 180 days of warranty upon the days of delivery. Check more detail on our shipping information page.

Feel free to contact us!