These are very new to me and I'm still not quite sure about them. I bought them because I got fed up ruining my clothes with bottles of sunsceen or sprays. These are individual towelettes soaked with SPF 3 and really easy to use - no mess! There are 15 in the packet and they cost £9.95 in the UK.
I do have some reservations. Firstly, there didn't seem to be a great deal of product in each wipe I am not at all a sun lover - I avoid it wherever possible because I am a fair skinned redhead. Hence I only need to use these for the bits I can't avoid exposing to the sun when I'm out and about in the summer - mostly arms, feet and chest (I use a separate product for my face and I generally wear leggings or have my legs coveed up in some way). One wipe ony just about did for these bits and I would need to reapply later in the day. If you expose more of your body you would go through a packet in no time.
Secondly, I was stunned to find that the expiry date on the packet I bought was a matter of months. I guess this may not matter much, expecially if you use a lot, but you're always likely to get left wth some at the end of the season which will not then be reusable the next year.
I may buy again next year because they are so very handy - but very expensive when you work it out.