Contoured XPE foam shoulder straps make your backpack light and soft enough, provide you a comfortable sense when put on your back. The XPE foam has low cost and eco-friendly, which makes you choose it as the liner material naturally because of its proper strength and waterproofness after getting wet.
Normal solution:
Density: 30-65kg/m3
Thickness: 5-10mm
Color: white, black or gray as request
