Ive been using these bags for sometime now. I have 3x3 (hooks&weight), 5x3(4to5"stuff). The 4or5x8 i use for storage of Original Zipper Shaking worms,before Case too over. I have over 900 of each color they made,and the original bags were just stapled shut.
One thing to note- the size of the bag,is the actual usable area.
Also i have not had any leakage,or moisture issues with the terminal tackle.