Average height in the world increased 5cm in past 20 years. If the mattress length is shorter than body height then people will catch the cold in the night.According to TCM Theory, if foot catches the cold in the night nervous system will be hurt seriously, people will feel headache,painful etc.
1# Open length changes from normal standard "183cm" to "195cm",As the time is going, extra long is the trend for sofabed business.
2# We have two versions: LF00SK (Salts and webbing),LF00PK (Wholly Poly Deck).
3# This product makes great sense to make high end daily use sofa bed furniture.