Features:●The fabric is composed of 90% canvas +10% Lycra stitching.●It has the characteristics of anti-tear, anti-scratch, anti-puncture, high wear resistance.●Waterproof function, easy to wash, universal in all seasons●One-button pull lock, free adjustment of assembly tightness, easy to install and disassemble.●Apply to New CFORCE 400/450 S,New CFORCE 500/520 S;