No. Carry-on travellers get the most immediate benefit, but the chapters on outfit formulas, laundry and access work just as well with a checked bag. They simply leave you with a lighter one.

That is the problem the book is arranged around. An early chapter has you name your comfort minimum first, so later reductions come from duplicated items rather than from sleep, health or hygiene needs.

It is an instant digital download. Once your order is complete the PDF is available straight away — nothing is shipped and there is nothing to wait for.

Any device that opens a PDF — phone, tablet or laptop. The file is yours to keep with lifetime access, and you can print it if you prefer working on paper.

Not at all. They sit at the end as an optional layer for drafting and checking lists, and the system works fully without them. Anything a tool suggests still has to be verified against current airline and destination rules.

Refunds are handled under the store’s Refund Policy (30 days), with the usual caveat that applies to digital products you have already downloaded.