The 72-hour kit, item by item

What "72 hours" is actually claiming

The three-day kit is a planning convention, not a physical law. It is roughly how long emergency management has historically asked households to be self-sufficient while roads, utilities, and services come back. Ready.gov's own basic kit calls for several days of water and food and more where possible. Treat 72 hours as the floor you can assemble this month, not the ceiling.

There are also two different bags hiding inside one phrase, and confusing them is the most common mistake on this whole subject. One is a kit you shelter at home with, where weight does not matter and water is the heaviest thing you own. The other is a bag you carry, where every ounce is a negotiation. Build the home one first: it is cheaper, it covers the far more likely event, and almost nobody ever has to walk anywhere.

The baseline, with a reason per item

The spine of this list is Ready.gov's basic disaster supplies kit, in our words, with the reasoning attached — because a list you understand is a list you will actually maintain.

• Water, one gallon per person per day (Ready.gov). Why: drinking plus sanitation, and it is the only item with no substitute and no source you control.
• Food you already eat, several days of it, needing no cooking. Why: a pantry you dislike never gets rotated. Calories that need no heat, no water, and no skill are the ones that get eaten.
• A manual can opener (Ready.gov). Why: the most mocked item on every list, and the one that turns cans into food.
• Light: a headlamp per person, plus a handheld. Why: hands free is a capability, not a comfort. You cannot hold a flashlight and do anything else.
• Extra batteries (Ready.gov), in the sizes your lights actually take. Why: standardizing the whole house on one cell size is worth giving up a slightly better light for.
• A battery-powered or hand-crank radio, ideally NOAA Weather Radio capable (Ready.gov). Why: the one information source that needs neither the cell network nor the internet.
• A first aid kit (Ready.gov) — the everyday kind. Why: blisters, cuts, burns, headaches, and upset stomachs are what actually happen. Trauma gear is a different subject with different prerequisites and we are not covering it here.
• Your medications, current, with a written list of names and doses. Why: pharmacies close, and the written list is what lets someone else help you.
• A whistle (Ready.gov). Why: it carries much farther than your voice and costs nothing to blow when you are exhausted.
• A dust mask (Ready.gov). Why: smoke and airborne dust are common in exactly the events this kit exists for.
• Plastic sheeting and duct tape (Ready.gov). Why: a broken window, a leaking roof, an improvised shelter, and a hundred repairs.
• Garbage bags and plastic ties, moist towelettes, soap and hand sanitizer (Ready.gov). Why: this is the sanitation half of the water number. A stomach bug in a house with no running water is a bad week made genuinely worse.
• A wrench or pliers that fits your utility shutoffs (Ready.gov). Why: worthless until the day it is not, and it has to be the right one. Go look now, not then.
• Local paper maps (Ready.gov). Why: navigation with no charged phone and no working network.
• Phone chargers and a backup battery (Ready.gov). Why: the phone is the map, the radio, the light, and the contact list. Dead, it is a brick.
• Cash in small bills. Why: card networks need power and connectivity, and nobody is making change for a hundred.
• Copies of important documents in a sealed bag, plus a photo of each on your phone. Why: insurance, ID, prescriptions, and the account numbers nobody remembers.
• Warm layers, a change of clothes, sturdy shoes, gloves, a hat. Why: see the shelter and hypothermia guide — wet and cold is the most under-prepared hazard on this list.
• A multi-tool or a fixed blade. Why: opening, cutting, prying, repairing. One good one beats three bad ones.
• Comfort. For children, the thing that makes a strange room feel normal; for adults, coffee. Why: morale is a real supply and both of these are cheap.

What it all weighs

Water weighs about 8.3 pounds a gallon. Three days at the Ready.gov rate is roughly 25 pounds of water for one person — before the pack, before food, before anything else. This single fact is what makes most bug-out-bag content quietly dishonest: nobody is walking anywhere with three days of water on their back, and a video showing a 20-pound bag with three days of supplies is counting on you not doing the arithmetic.

What real carried kits do instead is carry one or two liters plus the means to make more. A filter and a chemical treatment weigh a few ounces together and buy you water wherever water exists; our water guide covers why you want both rather than either. That is the trade — gear that converts a source, instead of a supply you haul.

The same honesty applies to the rest of it. A sensible three-day carried kit for one adult lands somewhere around 20 to 30 pounds with water, and that is a real load for anyone who does not walk with weight regularly. If you have never put the assembled bag on and walked three miles, the bag is a theory.

• Weigh the assembled bag on a bathroom scale. The number will surprise you.
• Carry it for an hour. Everything you resented at minute fifty is a candidate for deletion.
• Prefer items that do two jobs — a poncho that is also a tarp, a headlamp that is also the lantern — over items that do one job beautifully.
• Bulk is a separate constraint from weight. A sleeping bag is light and enormous, and a bag you cannot close is a bag you repack badly at the worst possible time.

What the money buys

• $150 — the honest starter, and most of the benefit. Water containers plus a case of bottled water, several days of shelf food you actually eat, a headlamp per person, a handheld light, batteries, a hand-crank or battery NOAA radio, a basic first aid kit, a manual can opener, work gloves, duct tape and sheeting, garbage bags and wipes, and cash set aside.
• $250 — add a real power bank, a water filter plus chemical treatment, a better first aid kit, a small camp stove with fuel used strictly outdoors, a pack to hold the carried version, and a second set of warm layers that live in the bag instead of in your closet.
• $500 — add a small power station in the 250–500Wh range or a solid solar-plus-battery setup, a sleeping bag and pad rated for your actual climate, a tarp or bivy, FRS or GMRS radios for the household, and spare consumables so the kit survives being raided for a camping trip.
• Deliberately absent at every tier: armor, a trauma kit you have no training for, and a generator. The first two are different subjects with different prerequisites; the third is covered in the power outage guide, along with the reason it is the item with a body count.

Maintenance is the part that fails

Kits do not fail at the shopping stage. They fail eighteen months later, quietly, in a closet.

• Put a date on it. Twice a year, on a day you already remember — the clock change works — open the kit, rotate food and water, test every light, and replace the batteries you meant to replace last time.
• Alkaline batteries leak and will destroy the light they are sitting in. Store them outside the device, or use lithium primaries for anything that sits for years.
• Power banks self-discharge. A bank at 0% in a drawer is a paperweight. Top it off at the same twice-a-year check.
• Your household changes. Kids outgrow the clothes in the bag, prescriptions change, and the pet you did not have last year drinks water too.
• The kit gets raided. Somebody takes the headlamp camping and it never comes back. The only fixes are the scheduled check, or a household rule that the kit is not the gear closet.

Let the builder do the list

This is the page our kit builder was made for. Pick the 72-hour mission and a budget and it will assemble a version of this list from the catalog in buy-first order, with the reasoning on each slot, so you can see exactly what a $150 kit and a $500 kit differ by.

It is a starting point, not a verdict. The builder does not know your climate, your household, or your medications — that part stays yours.