Durable and waterproof leather and nubuck upper, water-repellent fabric upper, new Boa® closure mechanism
M4. Breathable and waterproof Gore-Tex® Sportive lining, shock and strain-reducing Dual Comfort insole with shock-absorbing cushioning on both the heel and under the ball of the foot. Reflective loop on the back for added safety. Sievi Spike footwear has a completely redesigned and patented stud mechanism integrated into the sole structure, which allows the studs to be easily turned in and out without taking the footwear off.
