HEAD Boom Jr. Alternate Junior Tennis Racquet

The HEAD Boom Jr. Alternate Junior is the flagship 26-inch performance racquet in HEAD’s junior Boom lineup, engineered for competitive young players aged 9 to 11 years (height around 140–157 cm / 55–62 inches). Showcasing a striking tonal purple cosmetic (endorsed on tour by stars like Coco Gauff and Lorenzo Musetti), it offers a stylish alternative to the classic mint green Boom frame while scaling down adult performance characteristics into an age-appropriate length.

Weighing 245 grams (unstrung) with a 26-inch length and a 100 square-inch head size, it delivers explosive power, comfortable shock absorption, and high maneuverability for juniors making their final transition toward full-length adult racquets.

Performance Profile

1. Explosive Power & Depth (9.5/10): High. Modeled after adult Boom MP geometries, the Morph Beam profile acts as a springboard, generating depth and ball speed on aggressive groundstrokes.
2. Maneuverability (9.5/10): Superior. At 245 g with a head-light balance, it swings easily, allowing rising players to accelerate quickly through impact for heavy topspin and fast volley reactions.
3. Impact Comfort & Touch (9.0/10): Outstanding. Features Auxetic 2.0 technology to absorb frame shock, dampening vibrations to protect developing joints while enhancing ball touch.
4. Spin Access (8.5/10): Natural. An open 16x19 string pattern facilitates main-string deflection and snap-back, producing higher launch angles and topspin depth.

Key Technologies

1. Auxetic 2.0 Technology: Built into both the yoke and the bottom of the handle to actively adapt under contact pressure, delivering a connected, solid impact feel and real-time ball feedback.
2. Hy-Bor Construction: Incorporates a state-of-the-art aerospace material mix into the shaft to maximize torsional stability and frame stability.
3. Full Graphite Layup: High-grade carbon fiber construction ensures power transfer, structural stability, and frame longevity over composite junior frames.
4. Graphene Inside: Positioned strategically around the hoop to reinforce energy transfer and frame stability.

Best Suited For

1. Rising Junior Competitors (Ages 9–11): Young tournament-level players developing fast, aggressive stroke mechanics.
2. Green Ball (Stage 1) & Yellow Ball Hitters: Juniors stepping up from 25-inch frames before transitioning to 27-inch full-length performance racquets.
3. Coco Gauff & Boom Fans: Young players who want the unique tonal purple styling and explosive power of HEAD's tour-level Boom series.

Specifications

• Head Size: 100 sq. in. / 645 cm²
• Length: 26.0 in. / 66.0 cm.
• Unstrung Weight: 245 g / 8.6 oz.
• Unstrung Balance: 320 mm / Head Light.
• Beam Width: 24 mm Constant Beam.
• Composition: Full Graphite (with Auxetic 2.0 & Hy-Bor).
• String Pattern: 16 Mains / 19 Crosses.
• Recommended Ball Stage: Stage 1 (Green) / Standard Yellow.
• Target Player Height: 140 cm – 157 cm (9–11 years).
• Cosmetic Edition: Tonal Purple Alternate (Coco Gauff Edition).