- Please note that wrinkles may occur due to the nature of the fabric during the manufacturing process.
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The statue is a sample and may be subject to change without notice for improvements to small details and parts.
Dyneema's UL Stuff Sack is a versatile and easy-to-sort storage solution!
- No more scattered stuff in your tent or hut! No more lost stuff! No more dirty stuff!
- Made with durable Dyneema®, the seams are sealed! Super light and water resistant!
- It also creates a smart and cool looking packing!

Things that happen when climbing mountains, hiking, staying overnight, or camping
Has this ever happened to you?

Actually, these are all things I was thinking.
These may seem like small things, but resolving them can reduce stress both physically and emotionally, allowing you to act more freely and spend your time more fulfillingly.

What is UL FUN Packing?
UL FUN Packing will eliminate the little stresses that come with mountain climbing, hiking, camping, etc., and allow you to pack in a smart and stylish way!
You can spread things out within the packing, which means less clutter, less loss, and less items on the ground.
What's more, it uses ultra-lightweight, water-resistant, and durable Dyneema®!

Carefully crafted design and functionality
1. Large size
The wide-opening design and shape has actually been common for small storage containers for a long time.
However, while there were small pouches available, there were no large packing sizes or anything suitable for mountain climbing, hiking, camping, etc.
Therefore, we created a larger capacity size that can hold several days' worth of food, clothes, etc. for luggage when hiking overnight, such as camping in a tent or staying in a mountain hut.
Combining them into one large size makes it easier to pack into your backpack, keeps the inside of your backpack tidy, and makes your packing look smart and stylish.
The large size can hold freeze-dried food or other meals for two people for about 1-2 days.


The L size can hold about two days' worth of clothes.

Keep your backpack neat and tidy!

It can be packed smartly into a travel bag or suitcase.

2. The base doubles
This design allows the bottom area to double when the zipper is fully opened, allowing it to expand and become like a bathtub.
This base doubles, so

The contents are easy to see, allowing you to quickly find what you are looking for, and since it can be unfolded while still inside the UL FUN Packing, small items do not get scattered or lost, and it is hygienic as it does not need to be placed directly on the ground.
Pack a cookware, food, coffee set, etc. for a day trip into a medium size bag!


Since it does not need to be placed directly on the ground, there is no need to worry about it getting dirty and it is hygienic.

The M and S sizes are also great for organizing your day backpack.

3. Daisy Chain
A daisy chain is attached to the top with grosgrain ribbon, making it easy to remove from the backpack or attach to the outside of the backpack.
You can also hang it on something.
The back of the daisy chain attachment point is reinforced and sealed with Dyneema® tape.

All sizes can be attached to a backpack or other device by passing a strap through the daisy chain. Attaching it externally also increases storage space.

It is also easy to take out of your backpack.

4. Four sizes available to suit a wide range of needs
There are four sizes available, ranging from a small capacity that makes it easy to store small items, to a large capacity that makes it easy to store food, clothes, etc.
Enjoy smart packing while combining your favorite items!

Large size
Storage size: approx. 30cm wide x 15cm long x 15cm high
Capacity: Approx. 6.7L
Weight: approx. 36g
The large size has a large capacity, so it can hold freeze-dried food for two people for 1-2 days if you are staying overnight, or 2-3 days' worth for one person.


It's the perfect size to pack about two days' worth of clothes.



You can pack your backpack in a smart and organized manner.

You can freely combine L and M sizes for packing.

Your backpack won't be cluttered!

Medium size
Storage size: 15cm wide x 15cm long x 15cm high
Capacity: Approx. 3.3L
Weight: approx. 27g
The medium size is just the right size to hold cookware, food for a day trip, and a coffee set for two.

Small size
Storage size: 15cm wide x 10cm long x 10cm high
Capacity: Approximately 1.5L
Weight: about 20g
The small size is just the right size to hold snacks, small items such as spare tissues and a headlamp, cosmetics, and a shaving kit.



Slim size
Storage size: 20cm wide x 5cm long x 5cm high
Capacity: Approx. 0.5L
Weight: approx. 15g
The Slim size is just the right size for toothbrush sets, shaving sets, and other long, thin items.


Carefully selected ingredients
1. Dyneema® composite fabric
The fabric of the main body is made by Ambient Protective Materials (formerly DSM), a company that is known for its commitment to quality. It uses an ultra-high molecular weight polyethylene (UHMWPE) composite fabric, Dyneema® Composite Fabric (hereinafter referred to as DCF).
DCF is a water-resistant, extremely strong material, yet extremely lightweight.
The stitching is carefully sealed with the same DCF tape, which takes time and effort, so the contents will not get wet even if the bag is splashed with water or in light rain.
On the other hand, it is okay to put wet items inside.
*Not completely waterproof.
* As DCF is used, it will gradually wrinkle and shrink due to changes in the shape of the fibers. Pulling it gently will restore some of the shrinkage.
"Dyneema® composite fabrics break new ground in strength and durability. Compared to 500D nylon, Dyneema® composites offer dramatically improved tear, puncture and abrasion resistance, despite their reduced weight and bulk. They can also be customized to optimize strength, elongation, weight and overall thickness, specific thickness or thickness along predetermined load paths. The ability to customize flexible composite fabrics allows for use in a myriad of applications and industries, from outdoor sports equipment to emergency medical products."
*Source: Ambient Protective Materials website
*Dyneema® is a registered trademark of Ambient Protective Materials, Inc. Any use of the trademark requires official permission from Ambient Protective Materials, Inc.
2. Thickness of the fabric
DCF has a variety of fabric thicknesses, from ultra-thin to thick. The one I used this time was 1.43 oz/yd2.
1.43oz/yd2 means that one square yard of fabric weighs 1.43 ounces, making it the thickest single-layer fabric from DCF. It is a slightly stiff fabric.
A stuff sack, which is used to store and organize various items, needs to be lightweight, water-resistant to some extent, and durable enough against external influences. We chose this thickness of 1.43 oz/yd², which strikes the perfect balance between strength and lightness.
3. Waterproof zipper
The UL FUN Packing lid uses a YKK waterproof zipper.
Note: Not completely waterproof.

UL FUN Packing: The story of its creation and development

There are some large ultra-light stuff sacks made from DCF by overseas manufacturers, but there are no stuff sacks made in Japan that meet your needs.
We have started prototyping to create it with [YAMATOMO.FUN] .
While searching for pouches of various shapes, I first tried making a prototype of a small pouch, and the design was well received, so I decided to make a larger size as well.

During the prototype stage, we adjusted the size in 1cm increments, made small changes to the stitching, and the way the daisy chain was arranged, making many fine adjustments.We wanted to reduce the number of processes as much as possible, but we also didn't want to compromise, and it took us about two years to complete the product.
When I actually took it to the mountains, I found that being able to spread out cookware and other items without placing them directly on the ground prevented them from getting dirty with sand or dust, keeping them clean and making cleanup easier.I also found that it reduced my mental stress by allowing me to store food that didn't fit on the mini table inside the UL FUN Packing .
We hope you enjoy the ease of use of UL FUN Packing .

It was featured on YouTube!
We also introduced UL FUN Packing and other products!
Please take a look!
SPEC
[UL FUN Packing]
Fabric: Dyneema® composite fabric 1.43oz/yd2
Dyneema® Composite Fabric Hybrid CT5K.18 Ultra-High Molecular Weight Polyethylene
Zipper: YKK AquaGuard waterproof zipper
Color: Black, Dark Green, Blue, Purple Haze,Champagne Gold , Midnight Blue
Size (when stored):
L: Width 30cm x Height 15cm x Depth 15cm
M: Width approx. 15cm x Height approx. 15cm x Depth approx. 15cm
S: Width approx. 15cm x Height approx. 10cm x Depth approx. 10cm
Slim: 20cm wide x 5cm long x 5cm deep
capacity:
L approx. 6.7L
M approx. 3.3L
S approx. 1.5L
Slim approx. 0.5L
Weight:
L approx. 36g
M approx. 27g
S approx. 20g
Slim approx. 15g
Country of origin: Japan
