Schematic design of the hydrophobic ion gel. (a) Molecular structure of ion gel precursors: ionic liquid (IL, [BMMIm][TFSI]), polymer monomer EA, and crosslinker PEGDA. (b) Photographs of the designed test-tube experiments, demonstrating the hydrophobicity of EA and IL as well as the compatibility of EA and IL. (c) A colored and layered cocktail made from IL, EA, and water. (d, e) Photograph of a stretched hydrophobic ion gel, demonstrating the excellent transparency and stretchability.