|Portable & popular: Maclaren's Triumph £69
Lightweight and portable is the raison-d'être of the stroller, but all are not created equal. The very lightest strollers are also usually the most simple, so depending on how you intend to use your stroller their might be some compromise you need to come to with weight and features. The popular Maclaren Triumph, for example, weighs only 5.5kg, folds up to a tiny package and is highly portable, but you will only have two reclining positions and limited padding.
While you can now get lightweight and robust strollers, the two don't necessarily go together, so keep a careful eye on build-quality and look out for flimsy-looking features and handles.
Remember too that very lightweight strollers can be less stable than their more tank-like cousins, and many won't be suitable for hanging bags from the handles due to a propensity to tip. Pushchair weights are available to help balance the chair if you do want to use it for shopping trips occasionally, but generally want a very lighweight option. You can easily check the stability of the chairs when having a look in the shops by applying pressure or weight to the handles or by taking it for a quick spin around.
There are some impressive folding options available on strollers these days, and many have single-action folding and unfolding where you can operate the stroller with one hand. As strollers are so simple the folding action should be similarly simple, ideally you want to be able to hold your baby in one hand and collapse or open the stroller with the other. If you find it the least bit fiddly then you'll probably want to look elsewhere.
Your stroller should also fold down to a small size so you can fit it easily into the boot of your car, lug it on and off buses and use minimal storage space. Some models compact more successfully than others, so this is something to test in-store. You can usually use the forum or user reviews to find out whether a stroller will fit easily in the boot of your car.