open position fig3 a and lift it off of their natural hair in an upward direction fig3 a is the isometric view of the clip 011 in the open position the base 012 is pressed forward causing the comb like teeth 015 to expand and move slightly forward and away from the clamping bar 014 fig3 b is the isometric view of the clip 011 in the closed and locked position the clip base 012 is pressed in the opposite direction of the description in fig3 a or in the closed position the comb like teeth 015 converge and snap over center causing them to press firmly against the clamping bar 014 this allows the hair extension to be snap locked and firmly grip onto the wearer 39 s natural hair fig4 is a plain back view of the hair extension 06 this is the reverse side of the view in fig1 after the single layer tracks have been sewn together as described in the detailed description of fig2 the snap lock clips 011 are sewn onto the hair track base 08 the clips 011 are sewn along the top inside edge of the lead track base 08 and positioned so that the comb like.