1.Zip the second layer on to the playpen.(see figure A & B)
2.Take the 4pcs of steel tubes out.(see figure C)
3.Insert the steel tubes,one side into the fabrics holes and the other
two sides joined together.(see figure D & E & F)
4.Lay down the mattress.(see figure G)
A
B
E
F
C
D
G
H