NIKE AirMax System Kids Nike Air Max System Kids' Sneakers Size: 15cm New, unused, no tags No box Please comment before purchasing ◡̈ Cassette mixtapes. MTV. Mall arcades. The 80s were a fun and wild time. The Nike Air Max SYSTM is a pair that celebrates those incredibly cool times. From the large and bold Air unit to the design lines inspired by popular retro Air Max shoes, we've brought back the cool style in a new generation of shoes.