Zalando has free return for 30 days in my country, and they also include returning goods from multiple orders in a single return package as a suggestion in their FAQ.

They sell clothes and also shoes.

Zalando very much is operating on the principle that you order things to try them out at home and return whatever doesn’t fit or whatever you end up not liking. Just like in a physical store you try out clothes and shoes inside the store to see how it fits and how it looks on you.

That being said, there are limits to what they consider reasonable:

> One key part of that experience, and something our customers deeply value, is the ability to make an order, try the items at home, and, if needed, easily return those they don’t want to keep. In short: bringing the fitting room to your home.

> […]

> Customers whose return activity reaches disproportionately high levels will receive an email warning. This proactive step gives them the opportunity to reflect on their behavior, discover the solutions we provide to avoid returns, and adjust before further measures are taken.

https://corporate.zalando.com/en/convenience/bringing-transp...