A container includes: a container body to accommodate an object; a cap detachably attachable to the container body, the cap having a peripheral wall; and a shrink label to cover at least the peripheral wall of the cap and have a one-dimensional barcode displayed on the shrink label. An expression below is satisfied, L/(2circular constantR)<0.45, where L is a display width of the one-dimensional barcode in a peripheral direction of the peripheral wall, and R is a radius of the peripheral wall.