Backpack Fabric:

• Main Fabric: Teflon coating + Polyester + Non-toxic PVC backing (thick)

• Secondary Fabric: Teflon layer + Polyester + PU backing (thin)

• Lining: Nylon + PU backing (thin)

Back Panel Fabric:

• Surface: Sandwich mesh + EVA foam layer + Knitted fabric base / Three-layer heat-pressed composite

Dust Cover Material:

• Nylon fabric (same as lining)

Inner Compartment Fabric:

• Main Fabric: Suede fabric (Polyester) / Injection-type hook-and-loop + EVA foam layer

Support Frame Material:

• Aluminum alloy

Rain Cover Material:

• Nylon fabric + Level 4 water-repellent treatment

Other Materials:

• Black Hypalon, Polyester drawstring, Polyester fine-textured webbing

Buckle Material:

• POM plastic