From the given 64 GB 59.6 GB I can effectively use (NTFS formatted FAT hardly makes sense, otherwise fit it any files larger than 4 GB separately). Do not worry, the "missing" space keeps the controller in the USB stick back to replace defective memory cells, which are obtained as normal wear and tear over the years. Of these, one gets not even with what.
A word on the Pop-up mechanism: I personally would have preferred a stable protective cap that keeps namely also dust and dirt out of the socket out. Otherwise, I am quite satisfied with the "slider", without any problems out, in and when plugged into the USB socket of the USB flash drive works well not accidentally back: This is only possible when you move the slider on the top.
Go to Product: Use it often on a laptop, although fit so just stop there, however, could be a little narrow small - is already pretty tight if you have next door NEN USB stick.
For nen price of 30 to 40 (according to daily offer) this USB flash drive (USB 3!) Is not to exceed the price ratio. Then still Frustration-Free Packaging (you should have tried it out, really useful) - full of me 5 stars and absolute buy recommendation. Has rarely been so excited about a product.