Socks, electrically heated, type D. Stores reference 22c/723 & 4. Green gaberdine outer to which is sewn a heating element and stockinette fleece lining. The ends of the element terminates above the heel and are riveted to press studs that can be connected to a wired Sidcot flying suit or other wired garments. This is a mismatched 'pair' as both are for the 'right' foot and one is small, the other medium. There is some colour difference but both are in good condition bar some fading/soiling and fleece loss. Labelled with King's crown markings. Stock code B22234.