LokSak aLokSak Assorted Waterproof Resealable Storage Bags, Set of 4 (4x7, 6x6, 9x6, 12x12), Clear LokSak 4x7" Waterproof Resealable Storage Bag - 6x6" Waterproof Resealable Storage Bag - 9x6" Waterproof Resealable Storage Bag - 12x12" Waterproof Resealable Storage Bag - LokSak 30 Day Limited Warranty Hermetic Seal - An Absolute Airtight Seal Preventing the Re-entry or Release of Air and Micro-Organisms Made in the USA Holds Five Patents Protects Against Microscopic Particles like Dust and Sand