An IFAK (Individual First Aid Kit) is built around one priority: stopping life-threatening bleeding and keeping someone alive until professional medical help arrives. The standard contents focus on hemorrhage control, airway management, and hypothermia prevention. Whether you’re assembling a kit for tactical use, backcountry travel, or your vehicle, here’s what belongs inside and why each item matters.
Tourniquet: The Single Most Important Item
A quality limb tourniquet is the centerpiece of any IFAK. Uncontrolled extremity bleeding is the leading cause of preventable death in trauma, and a tourniquet can stop it in seconds. The Committee on Tactical Combat Casualty Care (CoTCCC) currently recommends several specific models for serious use: the Combat Application Tourniquet (CAT) Gen 7, the SOF Tactical Tourniquet Wide (SOFTT-W), the SAM Extremity Tourniquet (SAM-XT), and the Tactical Mechanical Tourniquet (TMT), among others.
Most people building a personal IFAK choose the CAT Gen 7 or the SOFTT-W because they’re widely available and can be self-applied with one hand. Carry at least one, ideally two. Avoid cheap knockoffs sold online for a few dollars. Counterfeit tourniquets have failed under pressure in documented cases, and the windlass rod (the part you twist to tighten the device) is the most common failure point in low-quality versions.
Hemostatic Gauze for Deep Wound Packing
Some wounds bleed from areas where a tourniquet can’t reach: the neck, armpit, groin, or torso. Hemostatic gauze is treated with agents that accelerate clotting when packed directly into a wound. The two most common types use different active ingredients. QuikClot Combat Gauze uses a zeolite-based mineral called kaolin that promotes clot formation by adsorbing water. CELOX gauze uses chitosan, a compound derived from shellfish shells, which bonds to red blood cells and dehydrates the wound area to encourage clotting.
Both work well for large, accessible wounds. Anecdotal reports from military use suggest they’re less effective on small entrance wounds with deep, narrow tracks, where it’s harder to pack the gauze directly against the bleeding source. Your IFAK should include at least one vacuum-sealed package of hemostatic gauze, typically in a Z-fold format that’s easy to feed into a wound cavity.
Pressure Bandages
After packing a wound, you need a way to hold pressure on it. An Israeli-style emergency bandage (sometimes called a pressure dressing) combines a sterile pad, an elastic wrap, and a built-in pressure bar into one device. You wrap it tightly over the wound to maintain constant compression without needing to hold it by hand. A standard 6-inch emergency bandage fits most applications, though 4-inch versions work for smaller areas like forearms.
Plain rolled gauze (a “cravat” or kerlix roll) is also worth including. It’s useful for securing splints, wrapping smaller wounds, or supplementing your hemostatic gauze if one package isn’t enough to fill a large wound cavity.
Chest Seal for Penetrating Chest Wounds
A penetrating wound to the chest can cause air to enter the space around the lungs, collapsing them. A chest seal is an adhesive patch that sticks over the wound to prevent air from flowing in. Vented chest seals (like the HyFin Vent or the SAM Chest Seal) have one-way valves that let trapped air escape on exhalation while blocking air from entering on inhalation. This design helps prevent a dangerous buildup of pressure inside the chest.
Pack two chest seals. If something punctures the chest, there’s often both an entry wound and an exit wound, and both need to be sealed.
Nasopharyngeal Airway (NPA)
If someone is unconscious, their tongue can fall back and block the airway. A nasopharyngeal airway is a soft, flexible rubber tube that’s inserted through the nose to create a clear passage for air to reach the lungs. Unlike an oral airway, it’s tolerated by patients who still have a gag reflex, making it more practical in the field.
Sizing matters. The correct NPA should roughly span from the tip of the person’s nose to the tragus (the small flap of cartilage in front of the ear canal). Most adult IFAKs include a 28 French (roughly the diameter of a standard adult nostril), which fits the majority of adults. An NPA should not be used if you suspect a fracture at the base of the skull, which can sometimes be recognized by bruising around both eyes or behind the ears, or clear fluid draining from the nose.
Include a small packet of water-based lubricant with your NPA. Inserting it dry risks damaging nasal tissue and causing additional bleeding.
Emergency Blanket for Hypothermia Prevention
Trauma patients lose body heat fast, and hypothermia makes blood clotting worse, which accelerates bleeding. A compact Mylar emergency blanket is a lightweight solution. Testing shows that a rescue blanket limits heat loss to less than 1°C over 60 minutes and less than 2°C over two hours. A single layer blocks roughly 82% of the body’s infrared heat radiation from escaping.
Mylar blankets prevent heat loss but cannot rewarm someone who is already hypothermic. They work best when placed between insulating layers. If you have a wool blanket or extra clothing available, sandwiching the Mylar blanket between fabric layers significantly improves its effectiveness. One practical note: if search and rescue teams are using thermal imaging to locate a victim, Mylar blankets make the person nearly invisible to those cameras.
Trauma Shears
You can’t treat a wound you can’t see. Trauma shears let you cut through clothing, belts, boots, and even light gear to expose an injury quickly. Standard EMT shears made from stainless steel handle most tasks, though higher-end options like the Leatherman Raptor (stainless steel with carbide inserts) show virtually no blade damage even after heavy use. North American Rescue trauma shears offer a good middle ground: slightly more durable than generic shears without the premium price.
Look for shears with a blunt tip on the lower blade to reduce the risk of cutting skin while sliding under clothing. A 7.25-inch length is standard and gives enough leverage to cut through denim and nylon webbing.
Gloves and Personal Protection
Every IFAK should include at least two pairs of nitrile exam gloves. Nitrile is the standard over latex for several reasons: it resists punctures and tears better, holds up against cleaning agents and oils, and eliminates the risk of triggering a latex allergy in yourself or the person you’re treating. Latex breaks down when exposed to certain chemicals, which makes it less reliable in unpredictable field conditions.
Pack your gloves in a small zip-lock bag to keep them clean and prevent them from degrading inside your kit. Replace them every 12 to 18 months, as nitrile can become brittle over time, especially in hot environments like a car trunk.
Optional but Useful Additions
Beyond the core items, several smaller additions round out a well-built IFAK without adding much bulk:
- Permanent marker: Write the time a tourniquet was applied directly on the patient’s forehead or the tourniquet itself. Medical teams need this information.
- Medical tape: Useful for securing bandages, taping down an NPA, or improvising a seal.
- Compressed gauze: An extra roll of standard (non-hemostatic) gauze for secondary wound packing or padding.
- Casualty card: A small waterproof card to record injuries, treatments, and timing for handoff to EMS or hospital staff.
What Doesn’t Belong in an IFAK
An IFAK is not a general first aid kit. Band-aids, antiseptic wipes, aspirin, burn cream, and cold packs belong in a separate everyday kit. The IFAK exists for one scenario: major trauma where someone could die in minutes without intervention. Every item should address a life threat. If it doesn’t stop bleeding, maintain an airway, or prevent hypothermia, it belongs somewhere else.
Keeping the kit focused also keeps it compact. A properly packed IFAK fits in a pouch roughly the size of a large smartphone and weighs under a pound, making it easy to carry on a belt, in a plate carrier, on a backpack strap, or in a glove compartment.