Fabric: Water-resistant Polyester. YKK Zipper and YKK Buckle
The belly strap is not removable, but it can be strapped to the pack itself to keep the pack fairly flush against your back without using the strap.
Use the waist belt, and slightly loosen the shoulder straps to shift the weight to the hips. That is what the hip belt on all backpacks is for. Adjust until comfortable. Also, use the sternum strap. It will bring the shoulder straps in tighter to the chest. It will also help prevent the shoulder straps from falling off the shoulders.
Separate bladder sleeve in the main compartment.Big enough for a 3 liters hydration bladder or a 17"laptop.
There is a waterproof cover in its own zippered compartment at the bottom of the pack. It covers the entire backpack