

Articles
A Game-Changer for Rainy Days! Workman's Waterproof Backpack Excels in Both Function and Value
As an everyday bag, the backpack is a fantastic choice. You can carry a decent amount of stuff, it stays stable while you walk, and it keeps both your hands free. It’s one of those go-to bags for nearly any situation, from your daily commute and school run to weekend city strolls and travel.
But they do have a few downsides. Take rain or snow, for example. We’ve all been there: you don’t realize your backpack is sticking out from under your umbrella, and water seeps inside. The indescribable disappointment of finding your laptop, documents, lunch, or a change of clothes soaked is just the worst.
For anyone who thinks, "I love my backpack, but I absolutely cannot have the contents get wet," Workman's "防水カジュアルバッグ" is the high-level answer. With great features, great looks, and a great price, it's a home run. We talked to Naoshi Matsushige from the PR department at Workman Co., Ltd. about this backpack, which boasts outstanding value for money.
Packed with clever features to keep water out
A waterproof backpack for only ¥2,900? That price is jaw-dropping.
Thank you. Currently, high-performance waterproof bags tend to be quite expensive. Our goal was to enter that market with a product offering top-tier waterproofing and durability at an unbeatable price.This "防水カジュアルバッグ" has three key features. First, its superior waterproofing gives you peace of mind on rainy days. Second is its incredible value for money; we pushed the balance between features and price to the absolute limit. Finally, it delivers the high durability needed to handle tough environments, from professional job sites to outdoor adventures.

Interesting. Could you tell us more about its waterproofing capabilities?
Let's start with the main body's material. We use a lightweight polyester fabric treated with a PU (thermoplastic polyurethane) laminate. This coating not only provides waterproofing but also enhances its tear resistance, which contributes to its overall durability.
Could you give us a specific figure for the fabric's water pressure resistance?
The fabric has a water pressure resistance of 5,000 mm, offering exceptionally high waterproofing. Furthermore, we use a thermo-compression bonding process on the seams, a structure designed to prevent water from getting in as much as possible.Why does thermo-compression bonding improve its waterproof quality?
Thermo-compression bonding is a technique where instead of sewing fabrics together, they are melted with heat and fused. This means there are no needle holes, which drastically reduces the potential entry points for water.This is a professional-grade waterproofing technique and is the cornerstone of the "防水カジュアルバッグ"'s superior water resistance.

What about the zippers? Any special considerations there? It seems like zippers are a common weak point for rain getting into backpacks.
We use water-resistant zippers for all closures. The surface of the zippers is coated with materials like polyurethane, which physically blocks water from entering on rainy days.Generally, with water-resistant zippers, the stiffer they are to open and close, the more waterproof they're considered to be. For this bag, however, we also made sure the zippers are smooth to operate. An everyday bag has to be practical, first and foremost.
Designed for Daily Use, with No Compromise on Practicality
The word you just used, 'practical,' really sums up the "防水カジュアルバッグ" perfectly. It’s not just the waterproofing; the interior and storage features seem incredibly user-friendly too.
The main compartment features a simple, single-chamber design to maximize its waterproof integrity. It includes a detachable sleeve perfect for laptops, which you can remove as needed. This simple structure makes it easy to pack and allows you to take full advantage of the 20L capacity.
The large front pocket is super practical too. It's perfect for stashing all your small essentials like a wallet, card case, and keychain in one place.
You can get inside from the zippers on either side, which makes finding your gear a breeze. The length of the zippers is actually a key feature. We made them longer, so pulling out bigger items is much easier. Plus, there are handy sleeve pockets on both sides of the main compartment.

The stability when you're wearing it is fantastic. The width and thickness of the shoulder straps are just right, and it's great that it comes with a chest strap. It really minimizes any bouncing while you walk and keeps the shoulder straps from slipping.
Thanks! We've added mesh padding to the inside of the shoulder straps and the back panel. This helps prevent sweat and ensures it's comfortable to carry.
Learning about all these high-performance features—waterproofing, durability, storage capacity—really drives home what an amazing value this bag is for the price.
We believe it's because we zeroed in on the core functions that professionals demand most—waterproofing and durability—and stripped away anything that would add to the cost.This is a backpack engineered to offer top-tier protection from rain, thanks to its superior waterproofing and seamless, welded construction. We're confident it's a bag that supports stress-free travel, no matter the season or weather.
PROFILE
Naoyuki Matsushige
Workman Co., Ltd.
PR Department
Text by Tomoshige Kase




