Packing light is an art, one that saves you from having to haul around a heavy bag or pay baggage fees. Next time you're going somewhere with cooler weather, lighten your load by adding more base layers like tights and thermals, rather than bulky sweaters and coats.
Image from pestoverde.
You have a ton of options when it comes to choosing base layers. Silk and merino wool are a good fit for a variety of travel situations.
If you're on a budget, synthetics and cotton will do, but they're not as good at keeping moisture away and drying quickly without absorbing odours. For more all-weather packing and travel tips, check out the link below.
How to Pack for Multiple Climates [A Pair & A Spare]