A milking teat cup liner including a rigid shell comprising a head portion having a skirt and a barrel housed within a shell. A shell liner with an oval tapered barrel and sidewalls having thinner longer axes and thicker shorter axes adapted to collapse inwardly along a minor axis from an open position while maintaining adjacent openings in the vacuum channel. The barrel has two locking wedges mounted to its outer surface to lock the liner in position. The liner has a short milk tube with a series of compression ribs running down its length, allowing it to compress without collapsing and to distort into an oval cross-section without closing the open internal tube. There are at least two notches between the compression ribs to allow the short milk tube to bend approximately 90 degrees relative to the liner without restricting milk flow to a milk claw.
