This memory card is very tiny so you should take extra caution not to lose it. Thankfully once you have it inside your Vita system you probably won't need to remove it. Especially if you buy a large size like this. I went with a 16gb card just because I don't want to run out of space and might download a few games from the Playstation Store. I'd definitely recommend this if you're looking at a memory card for the Vita!
Enjoy all of your digital entertainment with the 16GB PlayStation Vita Memory Card. Store your game saves, PSN downloads, and personal media on this memory card. Save up to*:
4-8 full PlayStation Vita games 12 movies 4,568 songs, or 3,200 photos
Take them wherever you go. * Or any combination of the above media. Calculations based on 1.75GB – 3.5GB average for full PS Vita games, 1.3GB average for movies, 3.5MB average for songs, and 5MB average for photos.