These things are amazing!  This is my 2nd pair I use them over and over.  I actuallu have slept in them without knowing they are so lightweight and comfortable.  I love to wear them under my bra for extar coverage at work or with no bra when away from work and wearing strapless.  I even used them under bathing suits at pool and ocean for modesty reasons around kids and they never lost grip.  I wear them into shower at night and wash them then put out to dry  and they have lasted forever.  they eventually get icky no matter if you wash every night but keep on sticking pretty good but I replaced for a clean fresh pair.  Love them I have bought otheres these are by FAR the best and longest lasting to date.