IKEA is making it easier for people to hack its furniture.

The Swedish retailer plans to roll out soon what it calls its first “open source” sofa—a piece of furniture designed to be easily customized to fit a space, or change functions entirely over time. Customers can clip on a lamp, or side table, or in a few minutes turn the sofa into a bed.

The concept is part of a broader push at IKEA to cater to the world’s fast-expanding urban population, living in increasingly cramped spaces. That effort entails designing products intended to maximize space, including multipurpose furniture and indoor hydroponic units.

The new sofa will be called Delaktig, Swedish for “being part of something,” and is expected to hit stores in early 2018. Other IKEA offerings already allow for some customization, for example, with replaceable colored covers. With the new piece, IKEA is opening the door for customers to experiment more fundamentally.

Delaktig’s design will allow third-party designers to create complementary products that can attach to the sofa or modify its use. Students at an IKEA-led workshop at London’s Royal College of Art came up with a clip-on privacy screen, a baby’s crib and a wall of shelves, among other designs for the product.