Features of the France Bed Zelt Spring Mattress

• The mattress is strong throughout, with minimal localized sinking and little lateral movement, allowing you to maintain a sleeping position in which your spine forms an S-curve.
• This mattress is recommended for those who prefer a slightly firmer mattress that keeps you in a comfortable sleeping position.

A luxurious double bed for sleeping alone

A double bed is slightly narrow for two people to sleep in. Unless you are a very small couple, I think it is better to think of a double bed as an ultra-luxurious bed for one person. The reason for this is that if you add up the average shoulder width of Japanese men and women, which is 86cm + 30cm of room to turn over x2 = 60cm, you will find that a double bed width of 140cm is not quite enough.