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321 Folding Mattress, Tri-fold, High Resilience, Firm, 10cm Thick, Single

★★★★★ 4.5 rating · 26 reviews · 257+ sold
$44.88 $58.3440013885498 30% OFF
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Product Details

No. 2380-793170

☆Immediate purchase OK & Same-day or within 24-hour shipping (Please read profile)
☆100 yen off for following & commenting (Comment after following) nana@

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☆New and unused
*Opened for inspection and photography. Please consider purchasing after checking the actual product photos.

◆Manufacturer: Y.K.YUKO

◆Size: Single (195 x 97 x 10 cm)

◆Weight: Approx. 8kg

◆Color: Gray

◆Comfort Layer Material: Polyfoam

[36D Density]
Using genuine 36D urethane, it is expected to have a lifespan of over 8 years under appropriate conditions. TIP: 0.18915m3 × 36kg/m3 ≒ Theoretical 6.81kg -- For the same size, over approximately 6.8kg is the standard. This product's foam weighs over 7kg (approx. 8kg including the cover). Products labeled 36D with a total weight of 4-5kg are theoretically equivalent to approximately 21-26D, which is too light to be called 36D.

[Firmness of 220N provides comfort]
220N, which is neither too soft nor too hard, prevents the body from sinking and maintains the spine's S-curve.
① Suppresses sinking of the lower back and maintains the proper height of the pelvis to lower back.
② Supports the body with a surface, dispersing pressure (reduces localized pressure on protruding areas like shoulders and hips).
③ Moderate resilience supports turning over, making it less likely to interfere with flow and body temperature regulation.
④ Synergistic effect with high-density 36D reduces the feeling of bottoming out and provides stable support.
⑤ Reduces concentrated load on the same area, alleviating stiffness upon waking.
*Experience may vary depending on body type, preference, and combination with the base.

[Abrasion Resistance]
Resistant to friction from turning over and getting in and out of bed, it suppresses pilling and fabric stretching while maintaining elasticity. The three-dimensional knit keeps the surface comfortable and flat even under sheets. The spacer creates an air layer that releases heat and moisture, reducing stuffiness and keeping you comfortable and dry even in sweaty seasons.
The cover can be removed with a zipper for washing.

[Non-slip, Moisture-proof, Waterproof Bottom]
The reverse side is made of high-density Oxford waterproof fabric (Polyester Ox / PU, TPU coating) with silicone non-slip dots. It is less likely to slip on flooring, tatami, or carpets, and blocks moisture and cold air rising from the floor, reducing the risk of condensation and mold.

*As this is a personal listing, manufacturer's warranty and bonus gifts are not included.
nana@

Category
Mattresses
Condition
New/unused
Shipping
Included in price (by seller)
From
Saitama

Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.

Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.

Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.

Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.

Customer Reviews (26)

4.5
★★★★★
Based on 326 reviews
5 stars
90%
4 stars
10%
3 stars
0%
2 stars
0%
1 star
0%
M
User6437050
★★★★★
2026-11-07

Alles kwam netjes verpakt binnen, zonder schade of gebreken.