Knit Through Back Loop – K TBL
The act of knitting through the back loop is pretty simple. This is known in abbreviations as K TBL. Short form of Knit Through Back Loop.
Instead of insert the needle from the underside of the look like the regular knit stitch. You have to insert the needle head on into the stitch and keep the needle on the back side. Follow through like regular knitting from that point.
Follow the demonstration below for more helpful tips.