Went right off topic there, rambling as usual. These types of backpacking sacks have their uses but what I'm looking for is effectively a lightweight suitcase with wheels but rucksack straps capable of carrying a load so you can walk a distance without resorting to those wheels. Why have wheels? Well I know wheels are useful for certain parts of your journey. For example luggage reclaim conveyor to your trolley, through the hotel lobby and to your room when you're lifting and putting it down a lot. Anyway, I'll be given the luggage item bought for me as a present next week. I'm hoping it's like I would buy. I like the osprey brand versions of this type of bag. They're about £140 if you shop around but the day pack that attaches is extra not standard. So I'm expecting possibly eagle creek version since I think the little pack comes as standard.