When a waterproof bag has been used by the U.S. government for Anthrax containment, you can probably trust it to keep your map dry on a canoe trip. Watchful Eye Designs’ line of ALOKSAK bags were originally developed for hazardous waste storage. Only recently did athletes begin using them to keep gear dry in the woods.

Basically heavy duty zipper-lock bags, ALOKSAK products are made of a thick plastic material and seal shut with a liquid-tight zip. But underneath the normal appearance, ALOKSAK bags are technical products that have received five patents for their closure design, material and manufacturing process.

When sealed, the bags are waterproof, air-tight and dust-proof. The U.S. Navy has tested and approved them to be leak-proof for long-term submersion to depths exceeding 60 meters.

In addition to the plain zip-closure bags, Watchful Eye Designs sells a range of products that incorporate the ALOKSAK technology. The Splash Caddy line, for example, includes map cases that have garnered a strong following with adventure racers because of their light weight, durable build and waterproof qualities.

Other products include hip pouches, wallets and a line of odor-proof bags the company claims can make stored food undetectable by animals that may otherwise raid your camp.

Electronics are safe from water damage in the bags, and the company says you can even operate a digital camera underwater in a sealed ALOKSAK.

Money, cell phones, GPS units, passports, matches, books, batteries and even clothing are items travelers and outdoor athletes commonly store in the bags, according to the company.

Price: plain zip-closure ALOKSAK bags cost $2 – $7 apiece (depending on size); Splash Caddy map case, $27.50.

Contact: Watchful Eye Designs LLC, 1-800-355-1126, www.watchfuleyedesigns.com