I've just been GIVEN 10 of these
A lady from DH work has had then for the past 6 months she heard we were TTC, and after chatting for a while about babies, offered me these as her youngest has just TT, but she wouldn't take any payment for them.....
Has anyone else used them, how are they?
Are they likely to need new elastic anytime soon, is it easy to replace?

TIA