YY Vertical – Aliens Finger Trainer About the product The YY Vertical Aliens are finger extensor trainers designed to help climbers balance the muscles of the hand and forearm. By strengthening the finger extensors, they help counteract the tension created by repeated gripping, supporting injury prevention and overall hand health. Compact and easy to use, Aliens can be incorporated into warm-ups, recovery sessions, or rehabilitation exercises. Key features Designed to strengthen finger extensor muscles Helps balance flexor and extensor muscle tension Supports injury prevention and rehabilitation Improves grip stability and finger control Compact and easy to use anywhere Resistance levels Easy: Green Medium: Blue Hard: Orange What makes it different Unlike traditional grip trainers that focus on flexion, the Aliens target the extensor muscles of the hand. This helps climbers maintain muscular balance and improve stability during climbing movements. In-store availability Available at monowrk online, fit · bloc Kent Ridge, and fit · bloc Telok Ayer.