Once you've added items to your cart, you'll have the opportunity to "save for later". 

To move a single item to your Saved Items, click "Save for Later" under the product description.To save an entire basket for later (all items from a single retailer), click the bookmark icon at the top right of the basket. 

To view your saved items, click on the "Saved Items" button in the menu bar to your leftWhen you are ready to purchase a product in your "Saved Items", select "Move to Cart" under the product description and proceed to checkout!