Knitting is a method by which yarn is manipulated to create a textile or fabric for use in many types of garments. Knitting creates multiple loops of yarn, called stitches, in a line or tube. Knitting has multiple active stitches on the needle at one time. Knitted fabric consists of a number of consecutive rows of intermeshing of loops. As each row progresses, a newly created loop is pulled through one or more loops from the prior row, placed on the gaining needle, and the loops from the prior row are then pulled off the other needle.
Knitting may be done by hand or by using a machine. Different types of yarns (fibre type, texture, and twist), needle sizes, and stitch types may be used to achieve knitted fabrics with different properties (color, texture, weight, heat retention, look, water resistance, and/or integrity). Once the hand knitted piece is finished, the remaining live stitches are "cast off”. Casting (or "binding") off loops the stitches across each other so they can be removed from the needle without unravelling the item.