Hand Performance System™ – Adjustable Finger Strength & Recovery Trainer

Dimensions

• Device Size: Approximately 12.20in x 10.04in x 0.67in
• Weight: Lightweight and portable, weighing approximately 0.44 lbs (200g).
• Compactness: Designed to fit comfortably in the palm of the hand or slide into a pocket for on-the-go use.

Material

• Main Body: Durable, high-impact ABS plastic and professional-grade stainless steel springs for long-term resistance stability.
• Touch Points: Soft, skin-friendly silicone buttons and palm rest to ensure comfort and prevent skin irritation during extended sessions.

Surface Width

• Finger Buttons: Each individual piston features a textured surface width of approximately 0.5 inches (1.3cm), providing a stable surface area for different finger sizes and ensuring accurate placement.

Non-slip Feet

• Ergonomic Base: The base of the device is equipped with a molded silicone grip that acts as a non-slip foundation, ensuring the unit remains securely positioned in the palm of the hand during high-resistance training.

Intended Use

• Skill Development: Perfect for musicians (guitarists, pianists, drummers) looking to increase finger speed, independence, and dexterity.
• Performance Training: Ideal for athletes (rock climbers, gymnasts, golfers) to build hand and forearm strength.
• Wellness Support: Suitable for individuals looking to maintain hand mobility and flexibility as part of a daily self-care routine.

Indoor Use

• Environmental Suitability: Optimized for indoor environments, including home gyms, offices, music studios, or during travel. Its quiet operation makes it suitable for use in shared spaces.

Care Instructions

• Cleaning: Gently wipe the silicone buttons and plastic frame with a soft, damp cloth. Use a mild soap if necessary, but avoid submerging the device in water to protect the internal spring mechanism.
• Maintenance: Keep the device free from dust and debris. Do not apply oil or lubricants to the spring pistons, as they are designed for dry operation.
• Storage: Store in a cool, dry place away from direct sunlight to maintain the integrity of the silicone components.

• Processing Time: 1–2 business days
• Delivery Time: 6–8 business days
• Estimated Arrival: 7–10 business days total
• Shipping Cost: Free standard shipping on all U.S. orders

All orders ship from our U.S. fulfillment partners for fast and reliable delivery.

If your item arrives damaged or incorrect, contact us within 30 days for a free replacement or refund. Orders can be canceled within 24 hours of purchase.

For any questions, email info@kovelli.com

We offer a 30-day return window from the date of delivery.

If your item arrives damaged, defective, or incorrect, we’ll cover return shipping and provide a replacement or full refund.

Changed your mind? No problem — you can still return it within 30 days. Return shipping costs apply, and refunds are issued once the item is received in original condition.

Please note: Opened skincare, supplements, and certain personal care items are non-returnable for hygiene reasons. Final Sale items cannot be returned.

To start a return, email info@kovelli.com
with your order number. Refunds are processed within 5–7 business days after inspection.