The RLH Heavy-Duty Mat Clip is an all-polymer, high-strength fastener engineered specifically to lock temporary construction mats together for stable walking paths. Built with a high-density internal matrix infill, this single-piece design provides the perfect balance of industrial rigidity and spring flexibility needed for wide-jaw clamping without the need for metal hardware. Manufactured from premium, weather-resistant polymers, it holds walking lanes securely in place through mud, rain, and heavy foot traffic without rusting, cracking, or losing tension. Made in Michigan, USA