Continuous cushioning 
Every detail of the Thunder Pro GTX is designed for those who tackle challenging trails even with heavy backpacks.
Thanks to the new Active Heel Pad (AHP)* technology developed by Zamberlan’s R&D team, ground impact is transferred directly to the sole through a PU insert passing through the insole and strategically placed in the heel of the shoe.
The result? This innovative system increases softness by providing consistent cushioning and reducing impact on joints for consistent, long-lasting cushioning.

Stability and grip designed for long-distance trekking
Tackling long distances requires a shoe that provides the right balance of support and lightweight.  The Perwanger® leather upper with Hydrobloc® treatment and durable, water-repellent Gore-tex lining ensures durability even in the harshest conditions. For support in rugged, off-trail terrain, the padded collar wraps around the ankle without constriction, adapting naturally to your movements. The recycled EVA midsole provides cushioning and stability, and the Vibram® tread design with Megagrip compound is designed to optimize ground contact and maximize grip.