Day #015 - buying a new mattress

My old one get's the same way like my bigtower (see day #014) - out of the window cause it was already rub through on some places.
Cause this I buy today another one - but they are pretty expensive (550 Euro)... but the last one holds about 13 years so it's just ~40 EUR/year...
It can be delivered at once - this means next friday. Till then I have to sleep on a inflateable one. *ouch*

See where this picture was taken. [?]