Multi-Layer Protection Style and Material Assimilation Multi-layer protection where DJDUCK protective wallet cover integrates external shell (polycarbonate or TPU polycarbonate with Shore hardness 85-95A supplying stiff structure), internal shock-absorbing layer (polycarbonate elastomer or silicone with Coast firmness 40-60A dissipating effect power with compression), and pocketbook part (natural leather or PU leather 0.6-1.8 mm density bound through sticky or sewed joints…
