If characters carry too much weight they can become encumbered. Being encumbered slows you down and limits what you can do. You track this with your Load stat.
Everything you might carry or wear has a Weight assigned to it, and if the total Weight exceeds your Load then you are encumbered. While you are encumbered you can only move OR act in a combat round, and outside of combat you only move at half your regular speed. If you travel for more than four hours in a single day while encumbered then you require twice as much water and food.
Your Load is 5 plus your STR modifier. The most you can carry and still move is 10 plus your STR. Characters with negative STR carry less!
Armor and weapons all have weight, and many items can be stowed with only minimal additions to a character's Load. Worn items, such as cloaks, jewelry, shoes, etc. do not have weight for encumbrance purposes. The GM doesn't track the PCs' Loads, but can call for an audit at any time. Violating encumbrance means you immediately "lost" something along the way. Likewise, not having something written down on your sheet means your character isn't carrying it.
This is my attempt at simplifying a system that is often too complex and filled with too many numbers. Load is a term that comes directly from Dungeon World, but a fair bit of inspiration for this came from Lamentations of the Flame Princess as well!