For US orders, simply click here. Canadian customers can click here. Customers in the UK can click here. Make sure you have your order number and postcode as you'll need those to initiate your exchange or return. If you don’t know your order number, customers can usually locate it by searching for “Confirmation For Order” in their Inbox or by looking for "Allbirds Order" number on the shipping label (it usually starts with UK in the UK).