Yes, as long as the item is still in its original condition. It can be swapped or sent back on the website, at a Sayyar branch, or by sending a WhatsApp message to customer service at 0555700007, and exchanges cost nothing.
Start by submitting a request to exchange or return the item, using the link provided on the policy page. If it is an exchange, they get the replacement ready and ship it to you as quickly as they can, or you can walk into the nearest branch and swap it right away. No return period is stated on the page, so if you are unsure, check with customer service beforehand.
Source: Sayyar: Exchanges and returns