This will fit PSVita model number PCH-1001. Check your model number on your Vita: on the back, it is on the sticker at the bottom of the touch pad zone. On the bottom it is on the sticker with the barcode. So it is stamped on your unit in two places. Make sure yours is the right model for this kit.
Nice thing is it comes as a set of two, so in case one breaks you have a second one. Includes TWO EACH of the plastic (not glass) stickers to protect your PSVita front screen and rear touchpad. Typical for this type of product: the protector has a sticker on each side to protect it from your fingerprints while you install it. Peel the BACK sticker off first, then stick that side onto your device. Use a credit card or similar thing to squeeze all the air bubbles out. Then peel the FRONT sticker off.
Good against dirt and small scratches. Easy to wipe clean if you get fingerprints or popcorn butter on it or something like that. Will not protect against cracks, fractures, drop damage, etc.
The front panel is pretty easy, it's just a rectangle that fits the screen area only, not around your buttons. The back panel has a weird shape and is a little difficult to get the angle perfect, may take a couple of tries. Be patient and go slow.