Electrical storage devices having excellent low-temperature properties can be obtained by using a quaternary salt of general formula below as an electrolyte salt for electrical storage devices or a liquid electrolyte for electrical storage devices. Embodiments of the present invention relate to a boot with a dorsal metatarsal articulation region that allows for articulation in the sagittal plane such as a telemark ski boot. A shield for reflecting electromagnetic radiation, may be disposed within the walls of the channel member and the cover. In response, the one or more instructions are retrieved from the register for execution by a processor. The valve piston also includes a control land having a substantially increased axial length with annular lubrication grooves, which improves stability and accuracy in operation. The contact portion has a storage portion provided on a side of the recording portion and configured to store an ink, and a protruding portion is provided between both ends in a width direction intersecting the transporting direction of the storage portion, and which is protruded toward the recording section, and an upper end of the protruding portion is the highest in the contact portion.