1、Volume：50L。
2、Polyester fabric with high density, high quality and abrasion resistance.。
3、Lining material: polyester fiber（涤纶）
4、The shoulder strap and waistband of this mountaineering bag are filled with thickened sponge to make the force more uniform and reduce the pain.。
5、Using high quality YKK zipper。
OEM is available for this product