Crossed stretchable zipper

As a classic mechanical fastening system, zippers are widely used from daily life to biomedicine. Conventional zippers, however, exhibit limited deformation compatibility due to their unidirectional zipping and nonstretchable interlocking mechanism, exposing the core issue of insufficient structure adaptability when facing scenarios requiring cross-connections or multi-directional dynamic deformation. Here, we report a crossed stretchable zipper, which achieves zipping in overlapping areas through the cross adapter, suppresses structure failure by latch-slot and suture-joint, and accomplishes the closure of separated fabrics while ensuring stretchability via stretchable zippers. This crossed stretchable zipper can confer the capability of two-dimensional mesh configuration while maintaining the inherent stretching performance (ε = 25%) of the stretchable zipper, significantly improving the flexibility and adaptability in application. In applications for hemiplegia rehabilitation wearables, modularity based on the crossed stretchable zipper shows advantages in personalized deployment and ensuring conformability, holding great significance for the personalized and popularized development of wearable systems.