for these things you can use return policy from top sex shops. here is a example from the first link on google
Returns Policy
Policy In Depth
Due to the obvious health and hygiene implications with adult goods. For the goods to be returned if they are not broken the following terms have to be met.
1. For the safety of your health, Lingerie and items of clothing are non-refundable and non-exchangeable.
2. The goods must be unused.
3 The goods must be returned in original condition & packaging.
4. Goods that are not heat sealed in the box are non-refundable and non-exchangeable.
5. Items supplied in sealed packaging that have been opened are non-refundable and non-exchangeable.
6. The goods must be received back within 10 days from the day you received their order.
7. Any discrepancies or damaged items need to be reported within 36 hours of being delivered.
8. Items that are not in a sealed packaging are non refundable and non exchangeable.
If we suspect that the goods have been used or any of the above conditions are not met then we reserve the right to return the goods.
The Freepost address is only for the use of returning faulty items from within the UK. When we receive the item back here it will be checked, if the item is not faulty and the Freepost address has been used, then there will be a charge of £3.50 plus vat for the cost of postage.
Replacement faulty items are sent back out to customer free of charge.
Returns Forms
Need to return an Item? Please print a copy of our returns form that can be downloaded here:
http://www.returnsform.co.uk
We have PO Box address for returning items that are not broken:
LOVESLINKY
PO BOX 228
Hitchin
Herts
SG4 0WW
you can edit some minor details amd use it on your website.