ZBB-SD19 Mountaineering Backpack
Material: 600D;
Quality: 1.25Kg
Sewing needle density: 7 stitches/30 stitches~9 stitches/30 stitches;
The color fastness to rubbing ranges from 4 to 5 in dry rubbing and 3 to 4 in wet rubbing.
The color fastness to brushing is (>3~4);
Light fastness (> 5 grade);
Tensile strength (> 800N);
Flat Strength of Zipper (> 600N)