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The ANTIPRISMS bag was named for the mathematical term that describes its structure. It can be reconfigured into various sizes, changing on the go to accommodate different volumes. It features two closure options – one by folding and the other by using inlaid magnets. The strap length is adjustable from 30 to 55 inches, so it can be used as a shoulder bag or a cross body bag. The attachment points of the strap can rotate 360 degrees to allow the bag to be worn at any angle.

Made from Italian leather – calfskin and lambskin – and available in four colors: POW!, Plume, Pop Art, and Porcelain.

Our origin collection is titled CMY-K after the color model used in printing. These colors – cyan, magenta, yellow, and black – are the primary pigments that compose all other colors.  We wanted to reference something as fundamental as primary pigments for our first collection to showcase the core design principles of WINWIN. We plan to build future collections with these same design concepts – they are the “primary pigments” of our brand identity.


The ANTIPRISMS bag is comprised of three segments that can be individually collapsed and extended.  The top segment is used for closure, and can be folded down or simply clamped shut with the magnets.  The video below demonstrates how to open and close the bag through folding.

The button strap inside the bag can hold one or both of the lower segments in place for a smaller bag size.  To have the bag in its flattest configuration, the snaps should be fastened on the middle segment as shown:


To have the bag in a mid-size configuration, the snaps should be fastened on the bottom segment, as shown: