Thunder is trekking pack with a superb weight to volume/feature ratio. The suspension system is quickly length adjustable and provides excellent fit, torso mobility and weight transfer. Three access options to the main compartment (top, front and side loading) allow simple packing and unpacking. A large front and two side stretch pockets offer additional storage space. A floating lid with inner and outer pockets and adjustable side compression straps increase carrying capacity for extended trips and expeditions.