# Pack a full trip in one bag

> OneBag Kit — https://onebagkit.com  
> Updated: 2026-10-05

![Illustration of an open green carry-on backpack packed with three stacked packing cubes, a rolled sweater, a small toiletry bottle, and a passport.](https://onebagkit.com/hero-onebag.webp)

**OneBag Kit** is a practical guide brand for carry-on and one-bag travel. We publish clear, citable answers on packing cubes, backpack styles, and trip lists — so you can leave the second bag at home.

Airline cabin limits vary by carrier and fare. Treat dimensions and weight here as typical ranges, then confirm with your airline before you fly.

Jump to: [Start here](#start-here) · [Packing systems](#packing-systems) · [Trip lists](#trip-lists) · [Rules & limits](#rules--limits) · [Checklist](#checklist)

## Start here

Friendly entry points — the pillar system, a printable checklist, and the “is my bag big enough?” answer.

- [Carry-on one-bag packing](https://onebagkit.com/carry-on-one-bag-packing/index.md) — pillar system for one-bag travel
- [Free printable checklist](https://onebagkit.com/checklist/index.md) — one-page carry-on checklist ([PDF](https://onebagkit.com/onebagkit-carry-on-checklist.pdf))
- [Is 40L big enough?](https://onebagkit.com/is-a-40l-backpack-big-enough/index.md) — why a 40L pack covers two weeks or a month with laundry — and when it doesn’t

## Packing systems

Cubes, folders, bag openings, laundry, and fabric choices that make one bag work.

- [How many packing cubes for 40L?](https://onebagkit.com/how-many-packing-cubes-for-40l/index.md) — cube count for ~40L packs
- [Compression vs regular cubes](https://onebagkit.com/compression-vs-regular-packing-cubes/index.md) — when compression helps
- [Packing cubes vs packing folders](https://onebagkit.com/packing-cubes-vs-packing-folders/index.md) — flexible cubes or low-wrinkle folders
- [Clamshell vs top-loader](https://onebagkit.com/clamshell-vs-top-loader-travel-backpack/index.md) — backpack opening styles
- [Laundry on a one-bag trip](https://onebagkit.com/how-to-do-laundry-one-bag-travel/index.md) — sink washing, wash-and-fold, and where dirty clothes go in the bag
- [Is merino worth it?](https://onebagkit.com/is-merino-wool-worth-it-for-travel/index.md) — odor resistance vs price, durability, and drying — an honest take

## Trip lists

Sample carry-on lists for climate and length — adjust to your season and airline.

- [Europe packing list: 14 days](https://onebagkit.com/carry-on-packing-list-europe-14-days/index.md) — sample two-week list
- [Southeast Asia: one month](https://onebagkit.com/carry-on-packing-list-southeast-asia-one-month/index.md) — a hot-weather carry-on list with temple cover and weekly laundry
- [Cold weather in a carry-on](https://onebagkit.com/cold-weather-carry-on-packing/index.md) — layers instead of bulk; wear the coat and boots; compress the soft stuff

## Rules & limits

Underseat vs overhead, strict weight caps, and what security treats as a liquid.

- [Personal item vs carry-on](https://onebagkit.com/personal-item-vs-carry-on/index.md) — what goes under the seat vs overhead
- [Personal item only](https://onebagkit.com/personal-item-only-packing/index.md) — fit a short trip under the seat: bag size, capsule, and what to cut
- [Under a 7 kg limit](https://onebagkit.com/carry-on-weight-limit-7kg/index.md) — light bag, weigh at home, cut dense items, wear the heavy stuff
- [What counts as a liquid?](https://onebagkit.com/what-counts-as-a-liquid-airport-security/index.md) — gels, pastes, spreads and sprays — plus how to pack carry-on toiletries

## Checklist

Print or download the free tick-box list, then read the About note before you fly.

- [Printable checklist (HTML + PDF)](https://onebagkit.com/checklist/index.md) — one-page carry-on checklist ([PDF](https://onebagkit.com/onebagkit-carry-on-checklist.pdf))
- [About & disclaimer](https://onebagkit.com/about/index.md)

## Frequently asked questions

### What is OneBag Kit?
OneBag Kit is a free informational site with original answer pages on carry-on and one-bag packing — packing cubes, backpack styles, and trip lists. There is no checkout on this site.

### Is OneBag Kit a paid product?
No. The site publishes free guides and a free printable checklist (HTML and PDF at onebagkit.com/checklist/). A paid kit may or may not ship in the future, but nothing is for sale here now.

### How do I join the waitlist or contact you?
Use the contact form on the homepage or email hello@onebagkit.com. Soft waitlist only — no purchase required.

### Do your packing tips guarantee airline acceptance?
No. Cabin size and weight rules vary by carrier, aircraft, and fare. Treat ranges on this site as typical guidance and always confirm with your airline before you fly.

## What the kit is

Today OneBag Kit is a set of free answer pages focused on carry-on packing, plus a free printable checklist: https://onebagkit.com/checklist/ (PDF: https://onebagkit.com/onebagkit-carry-on-checklist.pdf). There is no checkout on this site. Soft waitlist: hello@onebagkit.com

Agent notes: https://onebagkit.com/agents.md  
HTML: https://onebagkit.com/