The mymizu online shop is currently taking a break☕️



Can I return or exchange an in store purchase online?

Yes! As long as the product is not used, please contact us at within 7 days of receiving the item! Please note that return shipping fee will not be included. Read more here.

What is your return policy?

Our policy lasts 7days. If 7 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. You can find more about our return policy here .


How do you ship?

For domestic and international sales, we use Japan Post. We hand-wrap products with recycled paper and avoid unnecessary plastic wrapping as much as possible.

What if I want to cancel or change my order?

No problem, just shoot us an email at within 24 hours of placing your order! In the email, let us know if you'd like to cancel, or if you'd like to change your order, please order your preferred item on this website, and send us an email on your original purchase- we'll send you a refund for that.

How long will it take to receive my purchase?

  • Shipping preparation time: 1-4 days (usually takes 3 business days to process your order, excluding holidays and weekends).
  • Delivery time: 2-5 days (it generally takes one week from shipment to arrive within Japan.



When can I expect my refund?

Refunds can take up to 2 months to process.

Are there discount codes or coupons?

We currently don't have them but sign up for our newsletters and keep an eye out!


Are our t-shirts organic cotton certified?

The organic cotton used for our t-shirts is produced in accordance with organic farming standard recognised by the Global Organic Textile Standard (GOTS). The products are also processed in accordance with GOTS. This t-shirt is made in Bangladesh and printed in Japan.

Where are they made in?

The teeshirts are made in Bangladesh, and printed in Japan.

Aren't the products a little expensive?

Our bottles aren’t cheap, but we think it’s a fair price for a bottle designed and made to be both durable and highly functional! Each purchase also funds our nonprofit activities, including keeping our app free for all to use and recovering 1kg of waste from our rivers, beaches and oceans through our Ocean Loop initiative.

Due to COVID19, we are unable to ship overesas. We appreciate your understanding and cooperation.