Hyfin Vent Chest Seal Twin Pack
Built for real-world emergencies, the HyFin® Vent Chest Seal Twin Pack is a life-saving addition to any IFAK, trauma kit, or go-bag. Designed for tactical responders, EMS, military medics , and prepared civilians, this compact chest seal system provides critical treatment for open chest wounds and tension pneumothorax—one of the most life-threatening injuries in trauma care.
Each seal features a patented 3-channel vent system that prevents airflow into the chest cavity while allowing trapped air and fluids to escape, reducing the risk of tension pneumothorax. With advanced adhesive technology , they stay in place even on sweaty, hairy, or dirty skin—because trauma doesn’t wait for clean conditions.
Whether you’re on patrol, in the backcountry, or 20 miles down a trail, the HyFin® Vent Chest Seals give you the tools to act when every second matters.
"A prudent person foresees danger ahead and takes precautions. The simpleton goes blindly on and suffers the consequences. - Proverbs 27:12"
Dual Seals for Dual Threats
Treat both entry and exit wounds or multiple penetrating injuries
Reliable Venting
Patented 3-channel design maintains airflow escape even if partially obstructed
Rugged, Field-Tested Packaging
Red-Tip Technology® makes opening quick and stress-free
Easy Application
Large red tab allows for rapid deployment and vent burping if needed
Optimized for Trauma Kits
Lightweight and compact for IFAKs, rigs, packs, and more
Trusted Worldwide
Used by military and first responders in the harshest environments
The numbers, flat and honest.
| Device Size | 6 in. x 6 in. (excluding tab) |
|---|---|
| Packaged (Folded) | 7.5 in. x 4.5 in. x 0.25 in. |
| Packaged (Unfolded) | 7.5 in. x 9 in. x 0.13 in. |
| Weight | 2.5 oz |
| U.S. Patent | 7,504,549 |
WHY YOU’RE BUYING FROM STAY READY.
We aren’t the Amazon of survival. We’re a small, opinionated shop that carries gear we’d stake our own lives on — and we back every piece with real support.
Curated
Every brand we carry has been vetted in the field by our team. If it doesn’t pass our 30-day use test, we don’t stock it.
Authenticated
Factory-direct from authorized dealers. No grey-market, no refurb, no knockoffs. Your warranty is real.
Supported
Real humans on phone, text, and email — seven days a week. We carry this gear ourselves and we stand behind it.
American
HQ in California. Orders ship from our US warehouse. US-based customer care.
TACTICAL MEDICAL EQUIPMENT
Built by military medics. Makers of the U.S. Army's official combat tourniquet.
North American Rescue was founded in 1996 in Greer, South Carolina by seasoned military medics who saw the gaps in field medical equipment firsthand and built the kit to fill them. Their patented Combat Application Tourniquet (CAT) has been the Official Tourniquet of the U.S. Army since 2005, and is credited with cutting battlefield extremity-bleed mortality by 85%. NAR's gear is now standard issue across U.S. military units, tactical EMS, and law enforcement worldwide — chest seals, decompression needles, IFAKs, and the trauma kit that probably saved someone's life today.
- Founded in 1996 in Greer, South Carolina
- Built by seasoned military medics
- Maker of the CAT — Official Tourniquet of the U.S. Army since 2005
- CAT credited with 85% reduction in extremity-bleed mortality
- Tourniquets, chest seals, decompression needles, IFAKs
Answers, straight up.
Product-specific questions on the left. Shopping with SRO on the right. Both open-ended — hit us if we missed one.
How long does shipping take?
Most orders process within 1–3 business days from our warehouse. From there: 5–7 business days economy, 2–3 business days expedited, or overnight if you need it fast. Free economy shipping on orders over $150 (contiguous US). Alaska, Hawaii, and Pro Eagle / freight items are quoted at checkout. You’ll get a tracking number and link the moment your order ships.
What’s your return policy?
30 days from the day your order arrives. Gear has to come back unused, with all original tags, stickers, and packaging intact. For standard items we’ll send a prepaid return label and deduct return shipping from your refund. Oversized or freight returns are on you, unless the item showed up damaged, defective, or wrong — in which case we cover it.
Refunds hit your original payment method within 10 business days of approval.
What can’t I return?
Final-sale items, gift cards, food and drink products, personal-care items, anything customized or engraved, briefs (hygiene), and hazardous materials. If you’re not sure whether something qualifies, email us before you order — we’ll tell you straight.
Do you ship outside the contiguous US?
Yes. Alaska, Hawaii, and US territories ship on freight-quoted rates calculated after checkout. International orders are available worldwide at variable rates; duties and import fees are the customer’s responsibility. EU customers get a 14-day cancellation window per EU consumer law, on top of our standard return policy.
My package arrived damaged — what now?
Email info@stayreadyoutdoors.com within 7 days of delivery with your order number and clear photos of the damage (product + packaging). We’ll replace, refund, or ship a return label on us — no back-and-forth. Damaged, defective, or wrong-item claims never cost you shipping.
Can I talk to a human before buying?
Yes. Email info@stayreadyoutdoors.com — we answer every message ourselves, usually within a few hours during business days. We carry this gear, we use this gear, and we’d rather talk you out of a kit that doesn’t fit your mission than sell you the wrong one.
Do you offer a military/first-responder discount?
Yes. Active-duty and veteran military, police, fire, EMS, and medical first responders get 10% off every order. Verify through GovX at checkout — one-time, secure, and reusable across thousands of brands. Discount applies automatically once you’re verified.