An insulating transport/storage container for transporting/storing temperature sensitive materials, with a generally tubular wall element defining a load volume between first and second apertures at either end thereof, the tubular wall element having an axis. First and second closures operate to close first and second apertures and fastening means operable to secure said first and second closures. The tubular wall element comprises a multiple-layer winding of single-sided corrugated sheet, with the layers coupled together whereby to define a high level of thermal resistance.