Quick to assemble. I didn't like the string attachment. My son bed is towards the wall, I didn't have the room to pull it tight so it just got in the way (i cut it off). Without the string, it works perfectly, just open and slide under the mattress. It transition easy from my sons bed to ours (even when were half asleep). So easy my husband did it with my instruction while i was still sleeping (so he said). The weight of the mattress hold it in place and my son has tried to kick it away without success.