Tracheostomy tubes (1) of different sizes or of other different characteristics are marked on their flange (20) with a band (22) of differing colours or patterns. Similarly, inner cannulae (30) for use with tubes of specific sizes have a marking (33) of the same colour or pattern. The tube (1) and inner cannula (30) are contained in a sealed pack (40) having a tray (41) with a peel-off seal sheet (42) that also bears a marking (43) of the same colour or pattern. The sealed pack (40) is contained within an outer cardboard carton (50) having an end flap (51) which is sealed by a label (54) of the same colour or pattern so that tubes of the desired characteristic can be easily selected.
