Provides sure-footed traction for a variety of outdoor work applications. Quick release buckle and strap system for easy on, off. Molded rubber walls at toe, heel, and side provide secure fit. Durable push-through steel spikes placed toe, heel, and ball of foot. WorkTrax Plus styles include 52 sharp 5mm spikes per pair, which is 24 more spikes per pair than the standard WorkTrax. Single unit dimensions 16x7x4''. Sizes: M(7.5-9.5), L(10-11.5), XL(12-13), XXL(14-15). Features: Molded rubber walls at toe, heel, and side provide secure fit, 58 Push through steel spikes per pair, 9 more spikes per cleat than the K-1000 series, best in all day protection and slip resistance, extremely durable in heavy work conditions, push through spike options include "sharp" steel spikes for shallow penetration into wood or ice. Material: Rubber, Steel.