The Yonex Nanoray Junior badminton racket is designed specifically for junior kids with length of 25.5 inches and grips size of G7( approximately 3 inches in diameter). It has an square head based on Yonex's Isometric head shape technology to provide 32% larger sweet-spot (hitting area) than conventional badminton racket to help the young players hit the shuttlecock. The Yonex Nanoray Junior badminton racket is made of 100% carbon graphite (Graphite on head frame and Graphite/Carbon Nanotube on Shaft) to make the racket lighter in weight and easier to play for kids. The racket also has a head light balance to make swinging faster and helps improve timing as kids learn the skill.

In year 1992, YONEX developed the world's first epoch-making technology in badminton ...the ISOMETRIC Square Head Shape. This YONEX development continues to sets the pace of winning play. The Isometric Square Head Shape badminton racket design provides a 32 percent larger effective hitting area than a conventional oval shape badminton racket. Also, unlike a conventional badminton racket with main and cross strings of varying length, the Isometric Square Head Shape equalizes the length of main cross strings in the string-bed enlarging the sweet-spot all around for more consistent shot accuracy, even on off-center hits.