Just in time for Prada’s Spring/Summer 2019 womenswear rollout is the latest iteration of Prada Invites, a collaboration between the fashion house and leading designers, focused on Prada nylon.

This year, Prada has teamed up with three architects to design clothing or an accessory for women using black nylon. Elizabeth Diller, Kazuyo Sejima, and Italian architect Cini Boeri were all tapped to put their unique spin on the ubiquitous material.

Diller presented the Yoke Bag, a strap-and-pouch bag that can fold down to be carried with one hand or can be expanded and worn much like a life preserver. The Envelope, another example of transformable fashion, was also designed by Diller; what appears at first as a garment bag can also be worn as a raincoat.

Boeri contributed a more typical bag, with a long leather strap that can be slung over the shoulder but can be expanded or made smaller based on the user’s storage needs.

Sejima’s bags are more playful and modular than the others—the curved black bag with blue and pink handles, dubbed “Yooo,” can be draped over the shoulders like the Yoke Bag or carried by the handles. Additionally, blue, pink, white, and yellow pouches in irregular shapes and sizes can be attached for extra storage space and visual flair and adorn the longer “Daln” bag.

The Spring/Summer 2019 iteration of Prada Invites follows the program’s launch during the Fall/Winter 2018 show in Milan, where Rem Koolhaas, Herzog & de Meuron, French designers Ronan & Erwan Bouroullec, and German industrial designer Konstantin Grcic all debuted pieces.