Sanwa Direct, the direct-sales site operated by Sanwa Supply, has launched the "200-BAGBP035BK," a business backpack whose capacity grows by more than 1.5 times when its gusset is expanded[1]. It works as a slim business bag for everyday use, and opens up to hold plenty of luggage for business trips or travel. The surface uses a water-resistant PU-coated fabric, making it versatile enough for everything from commuting to private outings.
A roughly 9cm gusset expansion takes capacity from 22L to 35L
The backpack's standout feature is a structure that lets you widen the gusset to increase capacity[1]. It supports a gusset expansion of about 9cm, keeping a slim profile most of the time while letting you significantly widen the main compartment when you have more to carry[1]. According to Sanwa Supply, expanding the gusset boosts capacity by more than 1.5 times, taking storage from 22 liters up to 35 liters at once[1].
The intended use is to carry it as a smart, slim backpack for daily commuting, and to open the gusset only for business trips or travel to pack two or three nights' worth of luggage[1]. Because a single bag handles both on and off duty, it cuts down on the hassle of switching bags for different occasions. A backpack that changes size to match how much you are carrying looks like a reassuring option for business travelers who are often on the road.
Three storage compartments that open like a suitcase
Inside, the bag is divided into three areas: a main clothing and travel-goods compartment, a documents and gadgets compartment, and a PC and tablet compartment[1]. The main compartment is a full-open design, like a suitcase or carry-on, so it opens wide and lets you see everything at a glance[1]. A mesh divider helps prevent contents from shifting in transit while making it easy to tell what is where[1].
The documents and gadgets compartment is well equipped with fine storage: two pockets for small items, one mesh pocket, and two pen pockets[1]. With a depth of about 8cm, it can hold thick documents, catalogs, and A4 files[1]. It also comes with a detachable key hook so you do not lose track of your keys[1].
The PC and tablet compartment can hold a notebook PC up to 16 inches, a tablet up to 12.9 inches, and documents[1]. Because a belt and cushioning protect the devices and prevent them from slipping out unexpectedly, the design is reassuring even for people who carry precision equipment every day[1].
Water-resistant fabric, comfortable carrying, and thoughtful handling
The surface uses a PU-coated fabric that gives it water-resistant performance to protect contents from rain and dirt[1]. It has a pleasant feel and a premium appearance that fits well in business settings[1]. The back combines a breathable mesh fabric with cushioning material, so it is designed to be carried comfortably[1].
The front of the bag has three front pockets, letting you quickly grab small items[1]. There is also a side pocket that holds a 500ml plastic bottle[1]. The handle supports hand-carrying as well as vertical and horizontal grips, and the shoulder straps can be stowed away so they do not get in the way when carrying it by hand or when using the carry supporter[1]. A carry supporter that attaches to a suitcase is also included, helping with movement during business trips[1].
The color is a single, unadorned black, giving it a finish that works well as a business bag or a school bag[1]. Note that the zipper section is not a waterproof specification, so in heavy rain there is a chance water could seep in through the zipper[1]. The price is 7,710 yen (excluding tax), and it is sold across the Sanwa Direct stores[1].
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リュック マチ拡張 ビジネス 大容量 22L～35L PCリュック シンプル PUコーティング 耐水 撥水 多機能 バックパック メンズ 旅行 出張 ブラック 200-BAGBP035BK
Summary
The "200-BAGBP035BK" is a highly versatile business backpack that can change its capacity from 22 liters to 35 liters via a roughly 9cm gusset expansion. Being able to use one bag in two ways, slim for daily commuting and high-capacity for business trips or travel, is its biggest appeal. It is also packed with touches that consider everyday usability, including water-resistant fabric, three storage compartments, and a carry supporter.
Source [1]: https://prtimes.jp/main/html/rd/p/000005485.000011495.html
