Size: 35.4 x 78.7 x 1.2 in（standard metric size 200 x 90 x 3cm）. Can folded in four. (Folding size: 35.4 x 19.7 x 4.8 in.) If you are looking for a US King-size Futon or mattress, you need to buy two of them.Put two together side by side.
The surface is 100% rush grass. The backside is a non woven fabric. Rush grass have a peculiar smell. There are also people feeling smell strongly because there are individual differences. If you are worried about smell, please do a shade for a day in a well-ventilated place. I think whether it will not bother you to some extent although it does not completely disappear.
It suits very well to those who loves to sleep on hard platforms. Great for back problems or to be used for relaxation in a loungeroom.If you are not used to sleeping in a very firm surface it will take you a few nights to get used to it.
Folds easily.It folds up for convenient storage and carrying it to-and-from the closet or outside for its airing is easy-peasy.
Please wipe off dust powder with a dry towel or soft cloth along the seam before use, then clean the surface of mat with the wet towel, and dry it in a ventilated place. Do not exposed to the sun.