OPSAK: The Ultimate Odor-Proof Bags for a Bear-Proof Camping Experience OPSAK bags are an enhanced version of aLOKSAK, as they are not just waterproof but also odor and vapor-proof. So, if you're going camping, you can sleep peacefully knowing your food is stored in “bear-proof”, state-of-the-art storage bags. OPSAK is a cutting-edge product in its own class—it enhances your camping experience by preventing bears from smelling odors typical of traditional storage containers. Absolute Airtight Protection The hermetic seal, an absolute airtight seal, prevents the re-entry and release of air and microorganisms, allowing you to open and use the OPSAK without worry. Made in the USA Traps Odors Inside the Re-sealable Lightweight Bag The hermetic seal ensures waterproof protection for the OPSAK Used by USA and International Government Agencies OPSAK: Traps Scents Inside While Guarding Contents From Environment Odor-Proof Barrier Store food undetected to bears and other pests in your campsite by sealing it in the OPSAK bag. OPSAK is safe to use in food preparation and storage, you can even add boiling water to it to cook or re-hydrate food. Airtight & Waterproof The OPSAK barrier bags not only seal out odors but are also completely waterproof, offering protection against the elements for your food, clothing, and valuables. Their durable design ensures that your essentials remain dry and secure, no matter the outdoor conditions. Double Zipper Design The OPSAK features a double zipper design, providing a reinforced seal that keeps the contents secure and the elements out. This extra layer of protection means you can trust OPSAK to keep your items safe, with the ease of a simple zip. OPSAK Odor Proof 12" x 20" aLOKSAK Element Proof Phone Bag 4" x 7" OPSAK Large Odor Proof Bag 28" x 20" aLOKSAK Large Element Proof Bag 12" x 12" Buying Options Add to Cart Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 1,057 4.5 out of 5 stars 251 4.4 out of 5 stars 285 4.2 out of 5 stars 98 Price — no data $12.49$12.49 $29.99$29.99 $17.99$17.99 Watertight Seal ✓ ✓ ✓ ✓ Odor-Proof ✓ no data ✓ no data Reusable ✓ ✓ ✓ ✓ Made in USA ✓ ✓ ✓ ✓