Have this mattress bought together with the "MSS JUNIOR Children's and Youth Mattress" in order to equip the new double bed of my son. Here's a comparison of the two mattresses: Both mattresses are priced very similarly. The Ravensberger is but in my eyes a very clear winner. This mattress is very soft, but too soft so that I as an adult evening can still be comfortable not with my 70kg beside my child (3.5 years) and sometimes just to fall asleep because it is so convenient. This mattress actually corresponds to the degree of hardness H1! The MSS JUNIOR mattress however, is incredibly hard, so that I myself as an adult to her not feeling well. My wife and I have bought several years ago on top of an innerspring mattress with a 5 cm thickness memory gel layer at Ikea and are very happy with it, the Ravensberger comes this mattress what comfort terms very close. As a big advantage I see also the respect of cotton. Unlike the MSS JUNIOR mattress with synthetic relation the Ravensberger remains cool. The synthetic cover is ultimately only Allergy interesting. If this mattress purchase at any time and can highly recommend. The price is great, true processing and especially the information which the hardness affects absolutely right.