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Product Description
Arata ASP-14
■Manufacturer Description Quote
R-value 1.4 Weight 110g
Ultra-Lightweight Closed-Cell Foam Pad
arata's first polyethylene mat, the ASP-03, possesses unique properties designed for use with air mattresses, bringing new value to outdoor sleep.
Recent improvements in the insulation value (R-value) relative to weight for air mattresses have been remarkable, making it nearly impossible for polyethylene mats to compete with air mattresses in this regard.
However, it is also true that air mattresses cannot easily escape the risk of punctures.
arata's new closed-cell mat, the ASP-14, is an ultra-lightweight closed-cell mat that not only prevents punctures and slippage like the ASP-03, but also provides a comfortable night's sleep on its own during warmer seasons.
Focusing on the balance of insulation, weight, and cost, the ASP-14 achieves an R-value of 1.4 and a weight of 110g at an accessible price point. This new-generation closed-cell mat fits every modern mountain adventure style.
■Technical Note
○ Materials with a good balance of cost, weight, and R-value enable manufacturing.
When creating the ASP-03, the concept was to develop a foldable closed-cell mat, which has since become the most common type.
However, the material for ASP-03 is extremely costly. Creating a foldable type finished individually for each piece would result in a high retail price. Therefore, considering the current demand for closed-cell mats, we had once abandoned plans for commercialization.
Over a year after the ASP-03 went on sale, through ongoing communication with the manufacturing plant, the ASP-14 was born. It utilizes polyethylene, a material that offers relatively low cost while delivering high performance in terms of weight and thermal insulation.
○ Surface pattern decided after testing
The surface texture pattern directly affects the R-value and comfort level.
We tested various patterns: ones with multiple overlapping peaks and valleys, ones with steep peaks and valleys that are easy to gain R-value, and ones with large peaks and valleys.
Initially, I considered creating a pattern resembling peaks and valleys that would also serve as a design accent, but prioritizing comfort led me to settle on the most universal design.
The corners, which are rarely used in practice, have been cut off in this design.
○ "Deliberately Not Applied" Aluminum Reflective Layer
The ASP-14 does not feature heat-reflective aluminum film (or powder).
This is intended for direct use during hot or warm seasons like summer. For other seasons, it is intended for use in combination with an air mattress.
The aluminum reflective layer directly reflects infrared rays emitted from the human body when lying directly on it, creating a feeling of warmth. However, when used with an air mattress or similar, its effectiveness is significantly reduced.
The ASP-14 is a product designed with weight as a priority. The aluminum reflective layer was not adopted because its weight performance is poor in the anticipated scenarios.
○ High overall performance, the one and only
The ASP-14 is extremely lightweight, with an average weight under 110g—nearly a quarter of the weight of a typical closed-cell hiking mat—yet it achieves an R-value of 1.4, covering the area commonly used for hiking.
While its comfort and resilience (permanent deformation) fall short of typical closed-cell hiking mats, its weight makes it easy to carry alongside an air mattress—a significant advantage that led to its commercialization.
Be sure to take it along with your air mattress for all seasons, and when pursuing extreme lightness in summer, bring it alone for your mountain hikes.
■Technical Spec
・Dimensions: 51×182×1.7cm
・Packed Size : 51×13×9.5cm
・Weight：110g
・Material：Polyethylene
・R-value：1.4
■Close-up detail
・It adopts the standard 51cm width.
・This shape features cut corners for weight reduction.
・At 182 cm in length, it's a size that provides ample sleeping space for men and women of average height.
・The pattern and height we settled on after testing various shapes for comfort.
・While the design is very universal, we prioritize comfort.
・We use polyethylene with high performance in terms of weight and thermal insulation.
・Storage height is approximately 9.5 cm. This size is designed to be unobtrusive when attached to the side or bottom of a backpack.
※The average dimensions stated in the text are based on arata's research.
※Please note that some items may have slightly frayed edges due to the manufacturing and packaging process. These are fully functional products with no issues affecting their use.
※Please note that manufacturer images are used, so specifications (such as logo placement, color, and pattern positioning) may differ slightly from the actual product.
■Manufacturer Description Quote
R-value 1.4 Weight 110g
Ultra-Lightweight Closed-Cell Foam Pad
arata's first polyethylene mat, the ASP-03, possesses unique properties designed for use with air mattresses, bringing new value to outdoor sleep.
Recent improvements in the insulation value (R-value) relative to weight for air mattresses have been remarkable, making it nearly impossible for polyethylene mats to compete with air mattresses in this regard.
However, it is also true that air mattresses cannot easily escape the risk of punctures.
arata's new closed-cell mat, the ASP-14, is an ultra-lightweight closed-cell mat that not only prevents punctures and slippage like the ASP-03, but also provides a comfortable night's sleep on its own during warmer seasons.
Focusing on the balance of insulation, weight, and cost, the ASP-14 achieves an R-value of 1.4 and a weight of 110g at an accessible price point. This new-generation closed-cell mat fits every modern mountain adventure style.
■Technical Note
○ Materials with a good balance of cost, weight, and R-value enable manufacturing.
When creating the ASP-03, the concept was to develop a foldable closed-cell mat, which has since become the most common type.
However, the material for ASP-03 is extremely costly. Creating a foldable type finished individually for each piece would result in a high retail price. Therefore, considering the current demand for closed-cell mats, we had once abandoned plans for commercialization.
Over a year after the ASP-03 went on sale, through ongoing communication with the manufacturing plant, the ASP-14 was born. It utilizes polyethylene, a material that offers relatively low cost while delivering high performance in terms of weight and thermal insulation.
○ Surface pattern decided after testing
The surface texture pattern directly affects the R-value and comfort level.
We tested various patterns: ones with multiple overlapping peaks and valleys, ones with steep peaks and valleys that are easy to gain R-value, and ones with large peaks and valleys.
Initially, I considered creating a pattern resembling peaks and valleys that would also serve as a design accent, but prioritizing comfort led me to settle on the most universal design.
The corners, which are rarely used in practice, have been cut off in this design.
○ "Deliberately Not Applied" Aluminum Reflective Layer
The ASP-14 does not feature heat-reflective aluminum film (or powder).
This is intended for direct use during hot or warm seasons like summer. For other seasons, it is intended for use in combination with an air mattress.
The aluminum reflective layer directly reflects infrared rays emitted from the human body when lying directly on it, creating a feeling of warmth. However, when used with an air mattress or similar, its effectiveness is significantly reduced.
The ASP-14 is a product designed with weight as a priority. The aluminum reflective layer was not adopted because its weight performance is poor in the anticipated scenarios.
○ High overall performance, the one and only
The ASP-14 is extremely lightweight, with an average weight under 110g—nearly a quarter of the weight of a typical closed-cell hiking mat—yet it achieves an R-value of 1.4, covering the area commonly used for hiking.
While its comfort and resilience (permanent deformation) fall short of typical closed-cell hiking mats, its weight makes it easy to carry alongside an air mattress—a significant advantage that led to its commercialization.
Be sure to take it along with your air mattress for all seasons, and when pursuing extreme lightness in summer, bring it alone for your mountain hikes.
■Technical Spec
・Dimensions: 51×182×1.7cm
・Packed Size : 51×13×9.5cm
・Weight：110g
・Material：Polyethylene
・R-value：1.4
■Close-up detail
・It adopts the standard 51cm width.
・This shape features cut corners for weight reduction.
・At 182 cm in length, it's a size that provides ample sleeping space for men and women of average height.
・The pattern and height we settled on after testing various shapes for comfort.
・While the design is very universal, we prioritize comfort.
・We use polyethylene with high performance in terms of weight and thermal insulation.
・Storage height is approximately 9.5 cm. This size is designed to be unobtrusive when attached to the side or bottom of a backpack.
※The average dimensions stated in the text are based on arata's research.
※Please note that some items may have slightly frayed edges due to the manufacturing and packaging process. These are fully functional products with no issues affecting their use.
※Please note that manufacturer images are used, so specifications (such as logo placement, color, and pattern positioning) may differ slightly from the actual product.
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Cancellations, Returns, and Exchanges
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As a general rule, we do not accept returns or exchanges of merchandise for reasons related to the customer’s preferences, such as “it didn’t look like I expected” or “the size doesn’t fit.” If you have any questions or concerns, please consult with our staff first.
Please place your order after understanding and agreeing to the following points.
・Depending on the device or environment you are using, the color and texture of the product may appear slightly different.
・There may be slight variations in the dimensions listed in the product description.
・Minor scratches or scuffs may occur unavoidably during the manufacturing process.
・Depending on the material of the product, there may be variations in color, texture, or pattern from item to item.
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We make every effort to manage our inventory, but if we are unable to secure the items you ordered for unavoidable reasons, we may have to cancel your order.
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*Please note that we assume no liability for any losses, damages, or other adverse consequences resulting from a cancellation.
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・If a replacement item is available, we will replace the item.
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Please note that we cannot accept returns or exchanges if any of the following conditions apply. We appreciate your understanding.
・If more than 8 days have passed since the product was delivered
・When we determine that the customer has finished using the product
・If the item has been altered, washed, or dry-cleaned
・If any accessories (product tags, warranty cards, bags, boxes, etc.) are lost or damaged
・If odors, scratches, or stains occur while the item is in the customer's possession
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・If the item is returned without prior notice
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Important Notes
*Please note that inventory for this item is shared across our physical stores and other shopping sites operated by our company. We check inventory after receiving your order, so the item may be out of stock in some cases. We apologize for any inconvenience this may cause and will notify you via email if this occurs. Thank you for your understanding.