All models purchased on may be subject to exchange of size or refund. 
You have 30 days from the date of receipt of items to return the product if that ci does not suit you. Only items returned in new condition and in their original packaging will be accepted. 
As soon as has received your return package, you will be notified by mail to notify you.
Reimbursement is then within 10 working days (except in the case of credit card to deferred payment).
SIL is an Exchange that ci will be sent back under 10 days (subject to availability in stock).