Tempur Prima Futon 8cm Thick Double Mattress, Tri-Fold

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I purchased this at a direct outlet store and used it for about 4 months, but I am selling it because I bought a different one.

Quoted from the HP below:

[Comfortable Sleep that Conforms to Your Body]
Delivers peaceful sleep with excellent pressure distribution and support. Billions of ultra-sensitive cells in TEMPUR? Advanced material adapt to your weight, body shape, and temperature, reducing pressure on your body by 20% compared to previous products*. A thin, foldable mattress that can be placed directly on the floor or tatami. It's a tri-fold design that's easy to fold and can be stored to make effective use of your room. It can also be used as a bed mattress. The cover is removable and washable. Delivered in a non-woven fabric bag for storage.

Size: Single (for 1 person) Approx. 97x195x8cm / Semi-double (spacious for 1 person) Approx. 120x195x8cm / Double (for 2 people) Approx. 140x195x8cm
Folded Size: Single Approx. 97x65x25cm / Semi-double Approx. 120x65x25cm / Double Approx. 140x65x25cm
Brand: TEMPUR?. The only mattress & pillow brand certified by NASA and recognized by the Space Foundation. TEMPUR? material was first developed by NASA and born from technology used in space shuttles. Made in Denmark.
Comfort: Medium firmness (intermediate within TEMPUR?) *Based on the hierarchy and characteristics of TEMPUR? products. The household product quality label attached to the mattress body is based on numerical values obtained by legal methods and is labeled as firm or medium.
Thickness: 8cm (TEMPUR? Advanced material 3cm, Support urethane 5cm) | Country of Origin: Denmark | Color: White | Cover fabric: Surface / Polyester 98%, Polyurethane 2% Bottom / Polyester 100% *Antibacterial and deodorizing treatment

◆Key Specifications
? Size: Double
? Type: Tri-fold type
? Dimensions: Approx. 140×195×8cm (Width×Length×Thickness)

As it was purchased at an outlet store, it does not come with a warranty.
Although it was used for a short period, I have a dog at home, so please refrain from purchasing if you have allergies or dislike dogs.
The cover has been washed, but please consider it as a used item before making a purchase decision.