Boreal Synergy 2.0

Boreal

Boreal's modern competition slipper, refreshed with a lower-volume heel and updated hook-and-loop + elastic closure. Slip-lasted construction with NO midsole delivers maximum sensitivity for marginal smears and volume work. 4mm Zenith Ultra (Boreal's softest, stickiest compound) wraps the foot with a Wrap Rand and reinforced toe-hook rubber. Built for modern indoor bouldering, comp routes, and steep outdoor sport climbing where feel matters more than support.

Best For

Best for bouldering and sport climbing on overhang, roof and vertical terrain. Aimed at advanced to elite climbers.

Strengths & Trade-offs

Strengths

• No midsole = extreme sensitivity for smears and volumes
• Zenith Ultra is Boreal's softest, stickiest compound
• Reinforced toe-hook rubber for modern comp moves
• Lower-volume heel (2.0 update) locks in for heel hooks
• Hook-and-loop + elastic = fast on/off

Trade-offs

• No midsole means weak support on small edges
• Aggressive downturn punishing for long routes
• Pure comp/boulder shoe - not versatile
• Microfiber upper holds heat in long sessions

Sizing & Fit

Medium width with high-volume forefoot; lower-volume heel cup (2.0 update). Microfiber upper minimal stretch. Size snug for performance.

Fit profile: medium width, high forefoot volume, narrow heel, suits egyptian toe shapes.

Minimal stretch expected; minimal break-in.

Stiffness

Measured stiffness: 0.24 on our 0-1 scale (0 = softest). Among aggressive shoes it sits between the La Sportiva Theory (0.21, softer) and the La Sportiva Skwama (0.33, stiffer).

Specifications

Prices

Cheapest current offer: 154.95 EUR at bergzeit.de, 14% below the 180.00 EUR list price. 3 shops currently stock it (154.95 to 169.95 EUR).

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