Comfort Lightweight and padded back compartment Waterproof Waterproof material on the front parts Snap-on lid Easy to use Chest set: Function holder Plier holder Durable Durable material (600 denier) Volume 10 liters flexible rear compartment Storage/compartment 2 compartments 2 large front pockets 1 rear compartment Compatibility Chest backpack compatible with backpack 500 (8731598)