The Oakley LF SI ASSAULT BOOT is a specially engineered light/fast variant that combines mission-critical optimization with the mobility of an athletic design. Its supremely durable Vibram outsole stands up against the punishing abrasion and searing heat of fast rope insertions. A comfortably soft temper enhances stealth with sound mitigation, and a puncture-proof Lenzi layer helps minimize the chance of injuries. For a wide application profile, this boot is crafted with waterproof full grain leather.