What makes Space Bag watertight and air tight?
Three design features work together to create the airtight seal and maintain the vacuum in Space Bag. • The patented one-way air valve allows removal of air from Space Bag using any household vacuum cleaner hose. • Space Bag is made from bi-axial layers of polyethylene and nylon, which air and water cannot permeate. These give it the strength, flexibility and durability to hold the vacuum seal. • The Sure-Zip closure system seals like a sandwich bag but, unlike a sandwich bag, the closure is airtight.
