Abstract: One version of the barrier system may include a first barrier and a second barrier, in which each of the first and second barriers may have a support structure and an upwardly-extending structure. In addition, the first barrier may have a retaining structure adapted to facilitate retention of a portion of the upwardly-extending structure of the second barrier when one of the first and second barriers is in an inverted position. This inverted orientation may be especially advantageous when storing a pair of barriers. For example, in such an orientation, the barrier-pair may occupy less floor- or ground-space than two such barriers placed side-by-side. Moreover, depending on the height of the particular storage area, a second pair of similarly inverted barriers may be securely placed on top of the first pair. In this fashion, the barriers occupy relatively little storage space, space which typically is quite limited and therefore valuable.