The main body material is a fabric that meets CORDURA® brand fabric standards, produced at a certified factory that meets INVISTA's production and quality standards. It uses 840d warp yarn and two strands of double-twisted 420d Hollofil Air™ (66 nylon hollow fiber) aligned together as weft yarn, woven to pass CORDURA® brand fabric standards with strength against abrasion, tearing, and fraying.
A PU coating is applied to the back surface, and a special moisture-permeable waterproof film L-VENT® is laminated to further enhance water resistance, creating a 3-layer structure bonded with tricot nylon. This is master-piece's original fabric "MASTERTEX-09™" combining durability, water resistance, and water repellency.

For accessory materials, the leather uses high-quality North American steer leather, with 3M's water repellent added to the drum during the tanning stage to penetrate deep into the leather. After that, a base is created by dyeing and adding oil, and water resistance is further enhanced by spraying the same company's water repellent during the finishing stage.
This is waterproof and stain-resistant leather that has passed 3M's "SCOTCHGARD®" monitoring test. Since the test is conducted even after shaving the surface, the effectiveness does not diminish.

The material for the bottom and other parts uses INVISTA's 1680d CORDURA Ballistic® nylon, which has approximately 5 times the abrasion resistance, tear strength, and durability of regular nylon, with PVC processing applied to the back surface to further enhance strength and water resistance. In terms of functionality, the shoulder harness cushioning uses Outlast®, a temperature-regulating material developed for NASA, and the mesh material is finer and has a better texture than previously used materials.

The backpack's shoulder straps are equipped with an original "m-strap" mechanism that reduces the weight of the load.

At the bottom of the main body, we have placed original tape woven with slit reflective fabric attached in a loop configuration, taking nighttime safety into consideration.

*Please note that distribution channels for this product are restricted due to production circumstances.

Please note that it is not completely waterproof and cannot prevent water from entering through needle holes in sewn parts. If nylon material is left wet for a long time, the film on the back surface may peel off or cause deterioration, so be sure to dry it before storing. Since the water-repellent treatment is a surface treatment, the effect will diminish with use due to friction. Additionally, dust and other dirt adhering to the fabric will also reduce water repellency. After use, we recommend removing dirt by moderate brushing and frequently using commercially available water-repellent spray.
*Please use a water-repellent spray suitable for the material.
When using, please read the precautions carefully and test spray on an inconspicuous area first. The accessory leather may have wrinkles and scratches unique to individual hides. Please note that color migration, discoloration, and fading may occur due to friction, etc. Please note that since this is natural leather, it may become stained if exposed to rain or water. Product specifications are subject to change without notice.

・Material: MASTERTEX-09™ (CORDURA Ballistic® Hollofil Air™ fabric 1680d × 840d 100% nylon with moisture-permeable waterproof film L-Vent® laminate processing)
CORDURA Ballistic® fabric 1680d nylon (PVC coating)
Steer leather (3M SCOTCHGARD®)
・Weight: Approx. 1120g
・Size: W315 H455 D140 mm