The YY Vertical Duo is an ultra-compact training tool designed for precise finger strength development, focusing on mono and two-finger grips.

Built for climbers who want to isolate muscle and tendon work, it allows you to train anywhere-whether suspended from a branch or used on the ground with weights or resistance bands.

Why You'll Love It

• Targeted Finger Training - Mono + two-finger strength
• Ultra-Compact - Fits in the palm of your hand
• Train Anywhere - No fixed setup required
• Progressive Loading - Use with bodyweight, bands, or weights
• Skin-Friendly Wood - Comfortable, smooth finish

Key Features

• 25mm two-finger (bi-finger) grip
• Calibrated mono-finger pocket
• Recycled rubber wood construction
• Rounded edges to reduce injury risk
• Lightweight and highly portable
• Compatible with quickdraws, ropes, bars, or branches

Performance Benefits

• Builds finger strength for pockets and crimps
• Improves tendon resilience
• Supports progressive, isolated training
• Ideal for supplemental or advanced training

How to Use

• Hang from a bar, branch, or quickdraw
• Use for no-hang training with weights or bands
• Integrate into warm-ups or strength sessions
• Progress gradually to avoid overload

Perfect For

• Intermediate to advanced climbers
• Finger strength and tendon conditioning
• Portable training setups
• Crag warm-ups and travel training

Précis

Technical twin-finger socket (25 mm)

The Duo features a 25 mm-deep two-finger grip, ideal for training action pairs such as index-major or middle-finger-ring. It's perfect for preparing fingers for bi-finger arches, small flats or the fine rulers encountered on cliffs or hangboard.

Nomad

Minimalist, lightweight tool designed for mobility

With its small size and light weight, the Duo fits comfortably in your hand. It's quickly becoming a climbing bag staple. Whether you're warming up outdoors or training your fingers in your van, you can take it with you wherever you go.

Progressive

Multi-mode operation for all levels

The Duo can be used with bodyweight, suspended from a quickdraw or strap, or with a rubber band or disc for ground work. This allows you to adapt the load according to your level, your objective (strength / endurance / rehabilitation) and the context.

Comfort

Recycled material, pleasant feel, guaranteed longevity

Made from recycled rubber wood, it's environmentally friendly, durable and comfortable on the skin. Its rounded finish avoids painful rubbing and allows regular use without discomfort.