material: very good qualitiy Nylon +Polyester.
weight: 70L is about 1.8kg.
Note:
Shipping to Russia, south korea : it is including the rain cover.
Shipping to other country , if you want with rain cover, please contact me to pay extra fee.
inside support: a thick PVC plastic and one aluminum rod , they are not very hard, and can be bent by your hand , a bit flexible .
