One of the closure mechanisms on this bag is a buckle and roll top. The material used in this bag is canvas.
From OnBuy
V7 Elite Cbxt16-Canvas Carrying Case (Backpack) For 39.6 Cm (15.6") To 40.6 Cm ( CBXT16-CANVAS
Technoworld PLC
V7 8WH731 notebook case 40.6 cm (16") Backpack Black
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