The LocTote Flak Sack was created to be the toughest drawstring backpack ever. It is a slash-proof and theft-resistant bag perfect for any traveler looking to protect their belongings. The bags are created from a double layer of the “Most Advanced Slash Resistant Fabric” available. It is woven from a proprietary blend of high molecular weight polyethylene (HMWPE) and other state-of-the-art fibers. The material has the highest possible Blade Cut Resistance rating (level 5) based on international (ISO) and European (EN) standards. The patent-pending locking strap and heavy-duty solid brass and steel lock enable you to lock your bag shut and fix it to an object. Tested to over 1,000 lbs, the cut and break resistant nylon lock strap is reinforced with custom stainless steel components and 49 strands of stainless steel wire making it nearly impossible to cut, break or tear without extreme force or a heavy tool. The large RFID-blocking interior pockets protects your information from unauthorized scanning. The bag is also lightweight, water resistant, UV-resistant, foldable and packable. Protect your valuable items with the LocTote Flak Sack. Check out more details on Amazon here.