Frequently Asked Questions
Everything you need to know about your next favorite bikini.
How do I know which size will fit me best?
We provide a comprehensive size guide on each product page. Since our styles range from cheeky to full coverage, we recommend checking the specific measurements for each collection to ensure the perfect fit.
What is your return policy for swimwear?
We accept returns within 30 days of delivery, provided the items are unworn, unwashed, and have all original tags and hygiene liners intact. Please note that for hygiene reasons, we cannot accept returns that show signs of wear.
How long will it take for my order to arrive?
Standard shipping typically takes 3-7 business days within the domestic region. International shipping times vary depending on the destination but generally range from 7-14 business days.
How should I care for my ONEONE swimwear?
To keep your pieces in top condition, we recommend hand washing in cold water with a mild detergent and laying them flat to dry in the shade. Avoid rough surfaces and high heat from dryers.
Do you offer international shipping?
Yes, we ship our collections worldwide! Shipping costs and estimated delivery times will be calculated at checkout based on your specific location.
Can I change or cancel my order after it has been placed?
We process orders quickly to ensure fast delivery. If you need to make a change, please contact our support team within 1 hour of placing your order, and we will do our best to accommodate your request.