This base or filler foam is specially designed for systainer³, systainer® T-LOC 1-5 (I, II, III, IV & V) and the SYS-Combi storage containers. Made of soft 25mm thick closed cell foam, this unit fits snugly into the bottom of a systainer®. Used in conjunction with numerous inserts or on its own, this foam base keeps the contents from banging the bottom of the systainer®.