Structured power with responsive feel.

The Tenaya Mastia blends the support needed for forceful edging and dynamic moves with the flexibility of a split sole. Its downturned shape, single-strap closure and sticky toe rubber make it a versatile high-performance choice for steep sport routes, bouldering and technical footwork.

Why You’ll Love It

• Balanced performance - Support through the forefoot works with a responsive split sole for power without a numb feel.
• Secure heel and arch - The tensioned construction keeps the rear foot stable for heel hooks and steep movement.
• Fast, precise fit - A single hook-and-loop strap makes adjustments quick while maintaining efficient power transfer.
• Modern toe-hooking - Rubber across the toe-box and instep adds grip and protection on technical sequences.

Key Features

• Aggressively curved performance shape
• Responsive split-sole construction
• Single hook-and-loop closure
• Rubber-covered toe-box for hooking
• 3.5mm Vibram XS Grip outsole

Technical Specifications

• Upper - Microfibre
• Closure - Single hook-and-loop strap
• Outsole - Vibram XS Grip 3.5mm
• Construction - Split sole with responsive tension system
• Approximate listed weight - 330g
• Fit - Adaptable regular-volume performance fit
• Colour - Baltic blue
• UK sizes - 2 to 12 in half sizes

Perfect For

• Bouldering
• Steep and vertical sport climbing
• Dynamic moves and heel hooks
• Indoor and outdoor technical climbing

Important Information

Climbing-shoe fit varies by model, foot shape and intended use. Use Tenaya’s size guidance and, where possible, try the shoes before climbing. Inspect footwear regularly and stop using it if damage affects fit, support or performance.