An undercollar for Soviet field shirts "Gymnastjorka" (model 1943 and later). A strip of white soft cotton fabric 44 cm long, folded in half. Height 4 cm. Usually accurately sewn by hand to the collar of the shirt from the inside for the purposes of hygiene, comfort and beauty. In some cases, must be worn as per regulations.
Price for 1 undercollar (for one Gymnastyorka).