I was looking for a way to store my down filled sleeping bag… and additionally protect it from water (I trek in often humid/wet environment). Surprisingly I only found Sea to Summit product.
Overall I have no issue with the product and it works very well.
Check out the technical specification here: http://www.seatosummitusa.com/product/?item=Ultra-Sil+%26reg%3B+Compression+Dry+Sack&o1=0&o2=0&o3=591-12
Sony ActionCam FDR-X1000V