Once unpacked, unfolded immediately without the need for manual, this is done alone! The mattress attaches easily to bed to bed, safety, and child can not switch. I found instructions in several languages in a tidy plastic pocket at the bottom of the bag, impossible to lose. The mattress is thin but comfortable, soft, all tissue in contact with baby ARE CERTIFIED OKO-TEST. HOWEVER YOU DO NOT put MATTRESS 60 * 120, SINGLE MATTRESS 60 EC 112 * CONVIENT.Sans doubt to stand out and sell quite expensive fitted sheets but agree 120 60 * YOU CAN WASH COMPLETELY COVER THE NET (ie practice) by opening the slide closures The NET IS ON 4 SIDES (BABY IS VISIBLE) but perhaps embarrassed by the environment (if it is not alone in the room) to sleep. By cons must be able to easily bend down because it is deep and no opportunity to raise the mattress is almost at ground level. It is very light, 6kg with the bag and handles ,. You can gently rock your baby to calm him if necessary. It is shorter, slightly wider, lighter and easier to assemble and disassemble the Baby Relax who needs her to a real mattress! The design is very nice, only the price is high reports to other models! But if you travel a lot (holidays or Wend), you will not regret it, it will serve several children or cousins, or a visit to your baby because it is really easy to monter.Quatre stars in connection with the high price.