ALBA OPTICS DELTA ULTRA IV UNNA while the carbon Speedboard® flexes

while the carbon Speedboard® flexes to snap you forward

The norda™ x Vibram® SLE midsole is designed to offer maximum lightness and consistent elastic response even on the roughest terrain

Maurten Drink Mix 320 is a carbohydrate-based sports supplement using Hydrogel Technology

The new COOLmatic | PLUS FLOWmesh™ is integrated into the top panels to offer targeted ventilation where it's needed most

The length extends to the wrist and includes watch windows and gel pockets on both sleeves

ALBA OPTICS DELTA ULTRA IV UNNA while the carbon Speedboard® flexesThe Delta Ultra IV evolves Alba Optics' iconic design for long distance. The hand finished Tr90 frame is combined with the new VZUM Super Alu lens, 10% smaller than the original to optimize weight and ventilation: the hyper reflective mirrored treatment reduces glare, ensuring a 360 panoramic view and absolute clarity on the trail. Weighing only 26 grams and featuring ergonomic temple tips, it is the ultimate tool for those seeking boundless