A cheaper alternative is to take your own small rucksack.

If you have a lot to carry, take a small rucksack.

My husband lends me his rucksack - small - but it's only five days, so what do I need?

He was wearing a dark blue baseball cap and carrying a small rucksack.

Mr Chen grabbed a small rucksack from the floor of the car and went into the club.

With my small rucksack I squeezed through to the front.

Each child carried a small rucksack of food and a canteen of water.

To this can be added two small rucksacks and a large rucksack for additional carrying capacity, when required.

He was carrying a small rucksack by one of its straps.

It also delivered miniature food packages small enough to fit in Marine rucksacks.