1. Nishikawa Nap Mat, 6cm Thick, High-Resilience Urethane with Wave Shape, 60x180cm

Purchased on Amazon on June 21, 2025, this is a Nishikawa nap mat mattress.

List price: ￥11,800

Used once for car camping, then stored at home.

It is in beautiful condition with no sagging or damage.

A great deal for those looking for this item.

Manufacturer's description quoted below:

Product Details
Top Highlights
Brand: Kotoniyasu Anmin Kan
Size: 60 x 180 cm
Product Dimensions: 180 L x 60 W x 6 Th cm
Product Weight: 2.2 Kilograms
Firmness: Medium
Number of Layers: 1
[Original product jointly developed by Nishikawa x Kotoniyasu Anmin Kan!] The uneven surface is not too hard, allowing your body to sink in moderately. The high resilience supports your entire body in a balanced way. Wave structure to release sweat and moisture. By applying a wave process to the urethane, breathability is also considered. It releases unpleasant sweat and moisture that stick to your back. Five-fold type for versatile use. You can fold it slightly to use as a pillow, spread it out for napping, or fold it completely to use as a cushion, making it useful in various situations. It is more compact than a single size, making it easy to store.
[Size] Approx. 60 x 180 cm, Thickness approx. 6 cm [Composition] Core material: Urethane foam, Outer fabric: 100% Polyester, Inner cover: 100% Polyester [Specifications] Structure: Single piece, wave (five-fold), Firmness: Medium 75 Newton, Resilience: 98% [Product Weight] Approx. 2.2 kg [Country of Origin] Made in China
[Returns and exchanges are not accepted after opening] While returns are possible for product defects, we cannot accept returns or exchanges for reasons such as different from image or wrong size after the product has been opened. We ask for your understanding and consent before purchasing. [Care and Urethane Odor] Moisture is the enemy of mattresses. Periodically lean the mattress against a well-ventilated area to dry the moisture on the bottom surface. You may notice a urethane-specific odor when you first open it. If you are concerned, please leave it in a well-ventilated area for a while to allow the odor to dissipate. Avoid direct sunlight, as it can cause discoloration and deterioration of the core material. The urethane-specific odor will fade over time. Periodically rotating the top and bottom (head and foot ends) can help with moisture control and reduce sagging.