Instead Softcups is supposed to offer 12-hour femine protection. It also claims to be a proven alternative to pads and tampons. One size is also supposed fit most women.
I found that Instead Softcups did not fit me properly. I inserted it according to the instructions on the box but still had leaks. Thank goodness I had the forethought to still wear a pad! Not only was it hard to install, it is hard to remove Instead Softcups without spilling some of your menstral fluid. The instructions are well written, with even inllustrations of what you should be doing at each step, but I was never able to insert or remove it as described.
I did give the Instead Softcups a fair try by using 3 of the cups out of a box of 6. I would not recommend this product due the fact that it is hard to install and remove. Using pads or tampons is much easier and cleaner even if you have to change them more frequently!