So I know people generally do not use/buy second hand cot/crib matresses because it is supposed to increase the risk of SIDS.
However, on ebay and on local selling groups there is a roaring trade in second hand sleepyhead nests.
Is using onw of these second hand not exactly the same as using a second hand mattress? Or am I missing something??
I'm wondering whether to spend £90 new or £50 seond hand...