Returns and Exchanges

Wrong size? Not in love? Just changed your mind?

Don't stress.

Returns have never been easier.

60-day Money Back Guarantee

If our undies don't work as promised, let us know within 60 days and we'll refund you, no questions asked! The 60-day risk-free trial applies to one worn pair of undies only. Refunds will be paid to the original payment method that was used to place the order.


We process exchanges within 60 days of purchasing. You may return all unworn garments in original packaging, with hygiene sticker intact. Please download and print the returns and exchange form and include with your return.  Once products are received back at our warehouse, we will process the exchange within 2-3 working days. 

Common Return Questions

Is it easy to exchange items?

Totally. We accept exchanges within 60 days of purchase. Start your return/exchange by clicking the button at the top of the page!

How soon will I receive my refund?

As soon as we receive your return, we will process your refund within 2-3 days. 

What if I have other questions?

Please contact us at

Stockist Returns/Exchanges

For products purchased via stockists, please contact the stockist directly for their return/exchange policy regarding your purchase.

Order Cancellation Requests/Changes To Orders

Orders are sent to our warehouse hourly so we are unable to cancel orders or make changes to items in the order. If you discover that you have made a mistake with your order address, please contact Customer Service immediately at as we may be able to fix mid transit. However, we cannot guarantee that we will be able to amend your order in accordance with your instructions.

Please note:

Final sale items are non-exchangeable, non refundable. To be eligible for a return and refund for all items, they must be unused and in the same condition that you received them, unless they are faulty and covered by our 60-day money back guarantee.  The returned parcel is the responsibility of the customer until it has been received by FLUX Undies. No postage and/or delivery charges will be refunded. Returns from outside of the UK are made at the customer's cost.Our policy lasts 60 days. If 60 days have gone by since you received your order, unfortunately we can’t offer you a refund or exchange.If you are shipping product(s) over £50, you should consider using a trackable shipping service, as we cannot guarantee that we will receive your returned item otherwise.Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. After inspecting the goods and approving them, your refund will be processed within 2-3 days.