Industrial designers Christophe Guberan and Carlo Clopath and one of the foremost experts on 4D printing Skylar Tibbits worked together to develop the Minimal Shoe at the MIT Self-Assembly Lab. By combining standard FDM 3D printing with stretched textiles, a simple shoe could be created that will self-assemble. When stretched, textiles are pulled apart in order to elongate the individual threads in the fabric, when the plastic is printed onto the textile it holds those specific stretched threads in place and will quickly morph into a secondary shape once the textile is no longer being stretched. You can read more about this amazing future shoe over on 3DPrint.com: http://3dprint.com/103530/mit-self-assembling-shoe/