Octo - I'm sure the ones I have in my trial kits have been washed at 60C - doubt very much the new mums took the time to read the labels on each nappy and they are advised to wash at 60C.
Mine came from freecycle too! - I really like the look of them but very much doubt they will cope with super-weeing DS. What size do you want - I have two pairs here I think (but they are dark blue and turquoise).