These marmite covered, exceptionally munchy, knobbly, wholewheat snacks, are available in 200g barrels, which can just about last half way through a film. In fact I'm munching my way through a barrel as I type.
You either really like them, or abhor them, which is handy if you want a snack just for yourself.... Very few of my friends like them.
They can become an addiction, and can cause people to avoid you, especially if they dislike marmite.
They are available in other flavours, including Curry and Worcester Sauce flavours, but these are horrible. Only the marmite "Original" twiglets are worth eating.
They are a bit different from the average bag of crisps, less messy, provided you don't hold them in your hands till they melt, taste great, and you can pretend they are a healthier option.