#Japan #Vintage Goods #Bunkyo, Tokyo #ProGuard #Jay Chemical

New Flood-Resistant Storage Solution from Jay Chemical

In a bid to address the growing concern surrounding the preservation of valuable vintage and luxury items amid escalating flood risks across Japan, Jay Chemical Corporation, located in Bunkyo, Tokyo, has unveiled its latest product: the ProGuard Keeper Half. This high-performance storage pouch, measuring 360mm x 430mm, employs the internationally patented three-layer film technology known as ProGuard®, engineered specifically to safeguard clothing and small accessories from moisture, pests, and other environmental threats.

A Background on the Need for Protection

The impetus for launching the ProGuard Keeper Half stems from an evolving consumer demand for long-term storage solutions for not just traditional Japanese attire but also an array of personal, luxurious belongings. The company’s established product, the Kimonokeeper®, has sold over 3 million units, illustrating its popularity as a moisture and pest-resistant garment protector. Recently, customers have expressed a desire for solutions that can extend beyond kimonos to include cherished clothes, vintage pieces, and unique collections like oshi-katsu merchandise.

As the awareness of the need for such protection broadens, so too do the materials and items demanding preservation. From delicate silk and cashmere to high-end coats, leather goods, sneakers, and irreplaceable memorabilia, Jay Chemical has responded with a compact size designed for easy storage in closets and chests.

Launched Amid Increasing Flood Risks

As of September 2026, localized heavy rains and flooding pose significant challenges across the nation. Many households suffer from water damage during flood events, particularly affecting clothing and valuables stored in wardrobes and closets. Instances of damage during flooding, as experienced by numerous families, necessitate protective solutions for valuable belongings.

The ProGuard® film technology has previously demonstrated its efficacy during the 2011 Great East Japan Earthquake, where it protected delicate garments such as kimonos from moisture and muddy water when submerged in flooding. The innovative design employs a non-permeable three-layer film combined with a high-density double zipper, effectively blocking oxygen and moisture to safeguard items inside. With excellent waterproofing, moisture control, and protection against bacterial growth, this product serves as a vital shield during flood emergencies.

Product Features and Availability

The ProGuard Keeper Half is tailored for items including small traditional accessories, wool, cashmere, silk, leather goods, shoes, photography, and more, particularly beloved oshi-katsu items (like plush toys, badges, and limited clothing). With a suggested retail price of 1,600 yen (excluding tax), it's an ideal solution for casual preservation in small spaces.

In addition to this, the already available ProGuard Keeper (size: 720mm x 430mm) doubles that capacity, accommodating bigger items such as obis, yukatas, and large clothing pieces like coats, sweaters, and dresses, priced at 3,100 yen (excluding tax).

The Features of the ProGuard® Film

The ProGuard® film offers six key functionalities:
1. Insect Resistance: Completely blocks the intrusion and reproduction of insects.
2. Moisture and Water Resistance: Almost zero permeability to moisture and liquids, effectively shielding against flood damage.
3. Antibacterial and Mold Resistance: Suppresses the development and spread of bacteria.
4. Odor Resistance: Prevents odors from permeating from the outside.
5. Color Preservation (UV Protection): Cuts UV rays by 99.9%, shielding against fading from sunlight or fluorescent light.
6. Oxygen Absorbers: With proper usage, guarantees effectiveness for up to five years without the need for manual airing out.

About Jay Chemical Corporation

Founded and led by CEO Hidemitsu Takanashi, Jay Chemical Corporation specializes in the development, manufacturing, and sales of functional films. Located at 3-31-1 Hongo, Bunkyo, Tokyo, their dedication to innovation in protective materials marks them as leaders in their industry. For more information or to explore their product offerings, visit their official website at Jay Chemical.