A kit for the storage and transportation of medical equipment (31) following processing or use thereof contains, as its principal component, a tray (10) defined by a base (12) and surrounding walls (13, 14). The tray (10) has at least one fold line (19) formed in the base and/or walls (13, 14), thereby to facilitate compaction of said tray (10) for disposal. Optional further components of the kit include: a tray line (28); a protective cover (34) adapted to be detachably secured to the tray (10); a lid (23) adapted to engage with the walls (13, 14) of the tray (10); and an oxygen-impermeable container (37) adapted to receive said tray (10) therewithin.