The Flak Sack™ by the Loctote® Industrial Bag Co. is the toughest drawstring backpack ever. This extremely slash-resistant bag is like a portable safe for your valuables. It was designed to accommodate the lifestyles of people on the go who need their essentials with them, but are not able to be constantly looking after them.  Simply lock the bag closed or to any secure object – and leave it without worrying about it being tampered with or stolen. This bag doesn’t just carry your stuff, it protects it.

Color: Steel Grey – Midnight Black Ropes

In stock



Secure Locking System

Pull it, lock it and leave it. It’s that simple. The patent-pending steel reinforced locking strap and heavy-duty solid brass steel lock enable you to lock your bag shut, and to a fixed object. Making it nearly impossible to cut, break or tear without extreme force or heavy tools.

Extreme Slash Resistant

Crafted from a double-layer of the most advanced slash resistant fabric in the world. Woven from a proprietary blend of high molecular weight polyethylene (HMWPE) and other state-of-the-art fibers, the fabric was originally developed for use in high performance body armor and personal protection gear.

RFID Protected

Protect against RFID theft & electronic pick pocketing. Each Flak Sack™ bag comes with a large internal pocket lined with a certified RFID blocking material effectively shielding all contactless credit cards, passports, smart cards and key cards from unauthorized scanning.

Weatherproof Coating

Stuff happens! Rain, spills, high-tide, and general carelessness are the enemy of your small electronic devices and leather goods. We pre-treat each bag with an industrial grade stain and water repellant, so liquid will simply bead and run off the fabric and keep your stuff safe & dry from the perils of an active lifestyle.

Sternum Strap

Our leather sternum strap gives you that extra bit of security and comfort. By keeping the ropes centered across your chest, the Flak Sack™ stays secure with its weight comfortably distributed across your shoulders.  There when you need it, and removable when you don’t want it hanging around.

Lifestyle Ready

 This is the bag you’ll want to take with you everywhere. They are lightweight, comfortable to carry, foldable, packable, crushable, UV resistant, latex and gluten free. Whether you’re dressed for the office, the gym, the beach, or a night out — Loctote® bags are a soft reliable friend that will protect your stuff from thieves, and you from bland accessories.


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Dimensions: 18” x 14” in (fits Macbook Pro 15 inch)

Weight:  1.4 lbs without lock  (lock is 3.2 ounces)

Interior Pocket: 10” x 7.5” in (can fit an iPad Mini)

Source: Designed in Columbus, Ohio. Manufactured in China.

Care Instructions: Hand wash in warm or cold water using mild detergent. Pat dry with a towel and air dry. Do not tumble dry, bleach, or iron. For best results give it to your mom. She'll know what to do.


Domestic Shipping - Domestic orders are shipped via FedEx. Shipping is free on all domestic orders and delivery takes approx. 4-7 days.  Orders go out the next business day unless the item is on back order. Tracking numbers are provided via email at the time of shipping.

International Shipping - International orders are shipped via FedEx. Shipping cost is a flat $10 on all international orders. Delivery generally takes approx. 5-9 days depending on location. Orders go out the next business day unless the item is on back order. Tracking numbers are provided via email at the time of shipping.  We work hard to keep our shipping rates reasonable while ensuring your items are delivered in the most efficient and reliable way possible. International shipments may require additional duties and taxes to be paid by the buyer. Check with your local FedEx or customs office to find out more information.

If you have any questions, feel free to contact us.


We want you to be completely happy with your purchase. If for any reason you are not satisfied with any item purchased directly from this website, please return the item to us within 30 days of purchase in its original condition for an exchange, or refund in the original form of payment. All merchandise must be in new and unused condition. For international customers, return shipping costs are the responsibility of the customer, unless the product was damaged/defective when you received it.


All LOCTOTE™ products purchased directly from this website are warranted to be free from defects in material and workmanship for thirty days from the date of original purchase. This warranty does not cover intentional damage, accidental damage, damage resulting from unreasonable use, normal wear and tear, improper handling, damage caused by a common carrier, loss of use, or other consequential damages. If a defect is found in materials or workmanship, please feel free to contact us for instructions and authorization to send the defective product to us. Products that cannot be repaired to our standards will be replaced with a new one. We will cover the costs associated with shipping the defective product to us.

We accept no liability for any actual, consequential, or incidental damages or losses incurred as a result of using a LOCTOTE™ product. Though we are confident that we produce the best and most secure products available, we cannot control how they are used, the situations and circumstances in which they are used, or the forces and abuses to which they may be subjected.

If your bag is in a particularly punishing situation, we would love to hear about it. If your bag gets destroyed and your story is good, we just might give you a new one anyway.

SKU: 21228