Knit refers to a textile constructed by continuously interlocking loops of a single yarn or multiple yarns. Two techniques are used to create knitted fabrics: warp and weft knitting. Warp knitting occurs when the yarns move in the vertical direction of the fabric to form loops, while weft knitting occurs when the yarn is moved horizontally. The series of loops that are continuously connected horizontally are referred to as course, while the series of loops that intermesh vertically are known as wales. Traditional knits are two-dimensional but advances in technology have led to the emergence of three-dimensional knits, which can have a deeply dimensional surface or can be manufactured as a single piece. The distinct properties of knit textiles include flexibility, strength, and recovery.