Three Pack BW

Bamboo Wax Cloth
29 x 44 x 18.5 cm / 11.4 x 17.3 x 7.3"
24L / 900g
Mid-size backpack designed for convenience and comfort.
This backpack is divided into three large individual compartments to keep contents in easy to access zones. Original strap design keeps the bag closer to the back without bulky frames. Bamboo Wax Cloth and Mill Leather. Handmade in Japan.

Bamboo Wax Cloth

Our original Bamboo Wax Cloth for strength and water resistance. Ecological bamboo fibers are visible giving this material its unique touch and slightly shimmering surface. We developed this fabric in Japan for Postalco bags. Lightweight and weather proof but made with natural fibers. The wax treatment means you don't need to worry about a little rain.

Why bamboo?

Bamboo is actually a kind of grass, but with superpowers. One of the fastest growing plants on Earth, it defying gravity with its impressive tubes. It absorbs carbon quickly as it grows. But bamboo is hard. That's what makes it strong. And also difficult to weave into fabric. But we wondered if we could use this ecological fiber to make bag fabric?

Creating Bamboo Wax Cloth

Bamboo fibers are twisted with cotton to create this thin but durable cloth. Wax is then soaked deep inside the material for water resistance. This is no ordinary material so weaving machines capable of dealing with this tough yarn are needed. That is why all this happens under the expert guidance of a fabric mill in Okayama, an area of Japan with over 300 years of fabric weaving history. Exceptionally tightly woven for durability and water resistance so there's no need to worry about the weather. Softens with use to improve over time.

Mill Leather

We chose this leather for its luxurious soft touch and the way it fits the body. Aniline dyed to preserve natural color variations that are the trademark of beautiful leather. Full grain cowhide. Leather certified to be sustainable and responsible: best practices in traceability, energy consumption, water usage, air quality, emission control and worker safety. Made in facilities certified by The Leather Working Group (LWG). Tanning completed with REACH compliant ingredients. (REACH is a regulation of the European Union that restricts chemicals, heavy metals, and pollutants in consumer products including leather items).

How We Dye Our Leather

There is quite a bit of variation from skin to skin and even within the same skin. The typical way to make leather color uniform is to cover the surface with thick synthetic fillers and pigment coatings, covering the natural variations in surface and color. Unfortunately this finish does not allow scratches to blend in or improve over time. Postalco leather is colored using aniline dyes. Aniline dyes soak into the leather leaving visible the natural variation in grain and texture. The more aniline dyed leather is used, the better the surface patina gets over time. Each skin is different: a faint stripe-like pattern, called ‘tora’ in Japanese is a natural effect due to the way the dye soaks into the various parts of the skin. Each skin’s ‘tora’ is different. Making this leather is more expensive and time consuming but produces beautiful leathers.


Leather and fabric webbing may fade with use and colors may bleed, especially when wet. If your bag gets wet gently blot it with a soft dry cloth. Do not wash this bag. Do not place in the dryer. To clean: Spot dry clean or wipe with a moistened soft cloth. Using water repellent spray made to be used with both leather and fabric. If the leather feels dry please use a mild creme (such as clear Delicate Shoe Cream) to replenish moisture. Be sure to use only clear cream as any color will rub off!

Gift Wrapping

Gift wrapping may be a cloth bag or a paper bag. Wrapping materials used will vary depending on the product type and size. Please note that we are not able to accept requests for specific wrapping materials. If you would like to have multiple items wrapped together, or if you would like to wrap only some items, please tell us in the memo box. If you do not specify, we will wrap each item individually.

Example of what to write in the memo field:
"Notebook (light blue) and notebook (dark blue) gift-wrapped together, and Bag- gift-wrapped separately. etc. "

Order receipt
If you choose to receive gift wrapping, we will not include an order receipt that shows the price. Please contact us if you would like to receive a receipt by email.


Worldwide Shipping
We ship worldwide via DHL or other. Shipping usually takes 7-10 days from the dispatch date.
Shipping charges vary by country and are automatically selected according to the shipping address. The shipping charges for each region are as follows.

Order Price..............Shipping Cost
Zone 1
$449.99 and less...............$35
¥$450 and charge

Zone 2
$449.99 and less...............$60
$450 and charge

Zone 3
all shipping......................$100

▼What is my shipping zone?

Zone 1 (North America, Asia)
American Samoa, Brunei, Canada, China, Guam, Hong Kong, South Korea, Macau, Malaysia, Marshall Islands, Mexico, Federated States of Micronesia, New Zealand, Northern Mariana Islands, Palau, Philippines, Singapore, Tahiti, Taiwan, Thailand, United States of America, Vietnam

Zone 2 (Asia, Oceania, Europe)
Australia, Austria, Bangladesh, Belgium, Bhutan, Bulgaria, Cambodia, Cook Islands, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Fiji, Finland, France, Germany, Greece, Hungary, Ireland, Italy, India, Indonesia, Lao P.D.R., Latvia, Liechtenstein, Lithuania, Luxembourg, Kiribati, Malta, Monaco, Myanmar, Republic of Nauru, New Caledonia, Netherlands, Niue, Norway, Papua New Guinea, Poland, Portugal, Romania, Samoa, San Marino, Slovakia, Slovenia, Solomon Islands, Spain, Sweden, Switzerland, Timor-Leste, Tonga, Turkey, Tuvalu, United Kingdom, Vatican City, Vanuatu

Zone 3 (Middle East, South America, Africa)
Afghanistan, Albania, Algeria, Andorra, Angola, Anguilla, Antigua, Argentina, Armenia, Aruba, Azerbaijan, Bahamas, Bahrain, Barbados, Belarus, Belize, Benin, Bermuda, Bolivia, Bonaire, Bosnia and Herzegovina, Botswana, Brazil, Burkina Faso, Burundi, Cameroon, Canary Islands, Cape Verde, Cayman Islands, Central African Republic, Chad, Chile, Colombia, Comoros, Congo, Democratic Republic of the Congo, Costa Rica, Cote d’Ivoire, Cuba, Curacao, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Eritrea, Ethiopia, Falkland Islands, Faroe Islands, French Guyana, Gabon, Gambia, Georgia, Ghana, Gibraltar, Greenland, Grenada, Guadeloupe, Guatemala, Guernsey, Guinea Republic, Guinea-Bissau, Guinea-Equatorial, Guyana (British), Haiti, Honduras, Iceland, Islamic Republic of Iran, Iraq, Israel, Jamaica, Jersey, Jordan, Kazakhstan, Kenya, Kosovo, Kuwait, Kyrgyzstan, Lebanon, Lesotho, Liberia, Libya, Madagascar, Malawi, Maldives, Mali, Martinique, Mauritania, Mauritius, Mayotte, Republic of Moldova, Mongolia, Montenegro, Montserrat, Morocco, Mozambique, Namibia, Nepal, Nevis, Nicaragua, Niger, Nigeria, North Macedonia, Oman, Pakistan, Panama, Paraguay, Paraguay, Peru, Puerto Rico, Qatar, Reunion Island, Russian Federation, Rwanda, Sao Tome & Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Somalia, Somaliland, South Africa, South Sudan, Sri Lanka, St. Barthelemy, St. Eustatius, St. Helena, St. Kitts, St. Lucia, St. Maarten, St. Vincent, Sudan, Suriname, Swaziland, Syria, Tajikistan, Tanzania, Togo, Trinidad and Tobago, Tunisia, Turkmenistan, Turks and Caicos Islands, Uganda, Ukraine, United Arab Emirates, Uruguay, Uzbekistan, Venezuela, Virgin Islands (British), Virgin Islands (US), Yemen, Zambia, Zimbabwe

Order Price..............Shipping Cost
¥10,999 and less................¥750
¥11,000 and charge
Some products are eligible for delivery directly to mailbox for a shipping fee of ¥380. (Nekopos, Click Post)
If the products you ordered are eligible, you will be able to select it from the shipping method selection screen at checkout.

Postalco cannot take responsibility for any shipping delays due to customs clearance, payment transaction delays, or any unforseen circumstances.
Import taxes, duties, and related customs fees may be charged when the parcel arrives at the destination country. The payment of these charges and taxes is the responsibility of recipient and will not be covered by Postalco. Duties & taxes are set by the customs authorities of the destination country. We estimate the value to be between 25-40% of the amount paid for the item(s) ordered. The shipper will contact you directly requesting payment upon your order's arrival through customs.
All shipments outside Japan include a commercial invoice to avoid delays in customs. We are unable to indicate a lower price for the value of your order listed on your commercial invoice as we must adhere to all international import/export rules and regulations.
Unclaimed packages: The shipper will leave a notice if nobody is available to sign for your package. The shipping agent will hold your package for a few days only. If you do not claim it, it will be returned to us, marked unclaimed. You will be required to pay for shipping twice to have your order sent a 2nd time. There may be some countries we cannot ship to due to courier restrictions.

・Flat Pack BW - 17L
・Flat Pack BW Large - 21L
・Three Pack BW - 24L 

"Why don't you take off ya backpack in the train?"
“A gruff voice says behind me. This is my first commute on the rush hour New York City subway. Growing up in spread out Los Angeles I never once thought to take off my backpack to save space. At the age of 22 I suddenly realized how much a backpack can stick out. A chunky backpack gets stuck on stuff, knocks things over, and bumps into people. Thanks to that train rider, I learned that a good backpack blends into the body and doesn’t annoy people around you. "

・Original Bamboo Wax Cloth. Mill Leather trim.
・Hidden zipper pocket for wallet, keys, or phone.
・Large and small interior pockets inside to stay organized.
・Easy to grip Postalco zipper pull.
・Comfortable leather handles.
・Fits A4 size documents.
・Fits 13”, 14” or 16” MacBook Pro.

Three large pockets
When everything ends up in one large backpack pocket, it’s like a basketful of fish: it is hard to find the one thing you want. This backpack is divided into three large individual compartments to keep contents in easy to access zones.

Cushioned pocket
The main compartment contains a cushioned pocket that fits a laptop (13", 14" or 16" MacBook Pro) and other papers.

Front zipper pockets
The two large zipper pockets on the front are made with dividers that will keep the pocket volumes open even if the other pockets are filled.

Designed for comfort
When carrying any weight in a soft backpack, often the bag uncomfortably sags away from the wearer's back. Frame structures or thick foam cushions, used to prevent this problem, end up reducing valuable storage space in the pack. We developed an original design that keeps the bag closer to the back without bulky frames or overly thick cushions. The shoulder straps connect and continue to the bottom of the bag, structurally supporting the contents.

Feels good in hand
Double leather-wrapped handles on the top make it easy to carry this bag by hand, and long zipper pulls allow the bag to be opened and closed while wearing gloves.

Quick access pouch
The bag's top surface has a quick access zipper pouch large enough to hold a wallet, phone, and other essentials.

About Bridges
Gustave Eiffel who made the Eiffel Tower was a bridge specialist. To build the world's tallest tower he applied what he knew about bridge making. He really took a horizontal thing and made it vertical. Inspired by the way that a bridge divides and balances weight we made these lightweight bags that don't hide their structure. There is a single layer of fabric supported with a series of webbing straps. The lightweight architectural strength of the Postalco Bridge Bags is combined with our original Bamboo Wax Cloth.

Carrying research
Even in different ages and cultures, people’s methods of carrying on their backs are strikingly similar.

Thinking of handles
We design handles to match human hands, but our hands themselves are so flexible that handles can take on many shapes.

Staying the same
100 years apart but still carrying in essentially the same way.

Clever storage and easy access
Ever feel like you have a small house on your back? A backpack is like carrying a small house.

Object Layers Around the Body
Marshall McLuhan writes about objects that we use around us as extensions of our bodies. The wheel is an extension of our feet, telephones are extensions of our voices, and hats are extensions of our hair. Each thing we add to our bodies is an attempt to fill in some missing need. Will our bodies ever be complete?

Wax treated for water resistance
Water repellency treatment is fused directly into the fabric. No films or plastic sheets are glued to Bamboo Wax Cloth, allowing it to wear in to look better with use.

Learning from Japan
The craftspeople, suppliers, and small workshops found in Japan make things not to be found anywhere else. We are fortunate to work with family businesses that are so focused on their craft. Don’t put Postalco items on a shelf or in a drawer. Their beauty is revealed through daily use. They will help you feel good at home and be ready in a meeting.