The process of sizing greatly influences the performance of the shuttleless weaving machine. The concept of single end sizing is more ideal for yarn prepared for all shuttleless weaving machines particularly wider width machines with a large number of ends. Single end sizing facilitates proper encapsulation of size on the yarn and reduces hairiness particularly of blended yarns resulting in a ver y clear shed formation which is a must for shuttleless weaving. Double size beams are recommended to avoid over crowding. An optimum number of ends in the size box is given by optimum ends = 0.5 x (width of nip of size box) / dia. of yarn.