Trail 2.4

Maximum stability through millimeter-precise adjustment.

The centerpiece of our performance models is the patented PFA (Perfect Fit Adapter) system. It was specifically developed to bridge the gap between standard sizes and individual shoe geometry.

The Perfect Fit Adapter closes the critical gap for half-sizes and guarantees a perfect fit for every type of footwear – from slim trail runners to voluminous winter boots.

The USP: Mechanical precision instead of mere elasticity

While conventional systems rely solely on the stretch of the elastomer, the PFA system offers mechanical fine-tuning for the perfect fit of the crampon on the shoe:

• Individual Length Adjustment: Thanks to the adapter, the tension of the crampon can be precisely regulated. This guarantees that the crampon is always optimally positioned – regardless of whether the shoe has a low or high volume.
• Design-Independent: No matter how voluminous your shoe is built – the adapter compensates for different sole heights and widths, ensuring the system remains centered and secure under the sole at all times.
• Gapless Connection: Instead of settling for an “approximate” fit, the PFA enables a tailor-made connection that does not slip, even under extreme conditions.