CAMTOA Non-slip Spikes Ice Snow Crampons Shoes Chain Cleat Spikes Ice Snow Crampons Shoes Chain Cleat for Climbing Walking Hiking for Climbing Walking Hiking Easy to put on and take off Total Length: Approx. 30 cm, Length of Strap: Approx. 12 + 12 cm (extendable) Material: Latex, manganese steel Dimension of Sheet Steel: Approx. 6.5 x 4.5 cm ( L x W ) , Length of Steel teeth: Approx. 2.4 cm Traction tread outsole and cleats simultaneously contact walking surface, providing superior grip on ice, snow, rock and pavement.