Boreal Synergy is designed for optimum feel. A highly aggressive last shape is carefully blended with superb sensitivity and supremely sticky BOREAL Zenith Ultra ™ rubber to enhance the natural qualities of the foot; a true synergy of design, materials and craftsmanship, enabling you to push your limits on any bloc, both indoor or on rock.

Synergy features a highly asymmetric and downturned last to optimally position the foot on steep rock. The lined, synthetic upper with strap closure comfortably holds the foot , and ensures minimal stretch over time.

The rand and toe patch are constructed from a single piece, and combined with an area of our Friction Skin rubber coating, provides outstanding friction and sensitivity for toe hooks. Eliminating the midsole results in a highly sensitive and soft feel, ideal for marginal smears and standing on volumes. Our soft and sticky Zenith Ultra ™ rubber compound is optimized for performance on marginal smears.

Synergy is ideal for competition climbers and boulderers looking for maximum sensitivity and feel.

Technical Information:

• UPPERS: Microfibre upper. Combined elastic and strap closure. Elasticated tongue integrated in the upper. Minimalistic rubber toecap as protection and for outstanding grip
• LINING: Yes
• MIDSOLE: No
• CONSTRUCTION: Slip-Lasted
• SOLE: Ultra sticky BOREAL® Zenith Ultra outsole. 4-4.5 mm thickness depending on size
• CHARACTERISTICS: Highly sensitive. Single strap for heel security with excellent flexibility. Minimalistic construction allows maximum precision and sensitivity. Combined with a unique one-piece heel cup and wrap rand, this shoe is optimised to perform at the highest level
• USAGE: Bouldering, competitions and steeply overhanging rock