HEAD's junior racquet series helps kids to get started on their exciting tennis journey.

Made of an aluminum o-beam construction, the Speed 21 is great for kids just getting into the game who are 4 and older and 40-44 inches in height. 

• Weight (unstrung): 180 g / 6.3 oz
• String Pattern: 16/17
• Head size: 520 cm² / 81 in²
• Grip size: 000, 0000
• Balance: 255 mm / 0.5 in HL
• Length: 535 mm / 21 in
• Beam: 20 mm
• Age: 4 - 6

This racquet is typically used with Red Balls which are at 25% compression of the standard Yellow Ball and are designed for players aged 5-7 yrs old.

These balls are designed to land within the hitting zone (roughly waist height) for players in this age bracket

Typically these balls are larger than a standard ball and thus easier for players with not as advanced proprioception and hand-eye coordination. 

These balls are typically used on a mini-court or red ball court which is played across the court with a miniature net