Packaging
You’ll need a tough pack to withstand the rigours of travel, so robust and ripstop (resistant to tearing and ripping) materials are best. If using it when heading outdoors (hiking, cycling, canoeing, etc), look for waterproof – or at least water resistant – packaging with coated zips.
Also think about ease of use. Some have internal organisers, so finding what you need is fuss-free, but others that focus on reducing weight may compromise on handy, easy-to-find compartments.
Dressings
Let’s be honest, the most common injury you get when travelling is a small cut or scrape, so plasters, butterfly closures (to hold together larger cuts), sterile gauze and medical tape are all vital.
These will help stop bleeding as well as prevent dirt from getting into any wounds. If hiking, you can’t beat bringing a pack of good blister plasters, too – your feet will thank you.
Tweezers
Not all kits will come with these as standard, but they are great for removing not only splinters but also troublesome ticks, too.
Antiseptic wipes
These are endlessly handy for cleaning wounds or relieving insect bites, and are even good for cleaning your hands after administering first aid.
Weight and bulk
This will change depending on what you add or remove from your kit. The heaviest bag could well be the best, depending on your situation and personal needs.
Think about the activities you will be doing and countries you will be visiting, and adapt accordingly. If you’re going to a developing nation with questionable healthcare, don’t leave without sterile needles or water purification tablets.
But if you’re going to a place with good hospitals, it’s not worth the weight.
Useful additions
You can add anything you want to your kit, but particularly useful are painkillers and rehydration salts that you can take after being sick or after a bout of diarrhoea.