"Waterproof" and "water-resistant" get used loosely, but they describe genuinely different builds and for Indian monsoon conditions, that difference decides whether a jacket actually works. Out There Jacket is built to a 10,000mm waterproof rating specifically for that reason.
What's the difference between waterproof and water-resistant jackets?
Water-resistant jackets use a surface coating (DWR) that beads water off the fabric but wears down over time and under sustained rain. Waterproof jackets use a true membrane barrier rated in millimetres of water column, that is a measurable, lasting standard rather than a surface treatment. Out There Jacket's 10,000mm rating refers to this membrane standard, not a coating.
What waterproof rating do you need for Indian monsoon?
A minimum of 10,000mm waterproofing paired with around 10,000g/m²/24hr breathability is the commonly cited threshold for monsoon conditions in cities like Mumbai, high enough to handle sustained heavy rain without the jacket turning into a sauna. Out There Jacket is built to exactly that spec, rather than a lighter water-resistant rating that would fail in genuine monsoon conditions.