The main material is high-density twill woven from durable 66 nylon using 70d warp and 210d weft yarns, dyed with a high-pressure jigger process.
It is then treated with master-piece’s original special water-repellent finish called m-coat™. Compared to conventional water-repellent treatments, m-coat™ offers significantly superior water repellency and abrasion resistance.
Unlike traditional finishes, it uses special technology to structurally bond the water-repellent agent to the fiber surface, achieving outstanding water repellency and durability.
Many water-repellent products lose performance through repeated use and washing, but m-coat™ maintains a Bundesmann water repellency test rating of Grade 4 even after 100 washes.
For water repellency testing, the more rigorous Bundesmann test (※) is conducted instead of the conventional spray test (JIS-L1092). In addition, the reverse side of the fabric is processed with Breathatec® by Toray Coatex Co., Ltd., a polyurethane wet microporous coating material utilizing proprietary polymer technology for high water resistance.
The polyurethane coating used is durable polycarbonate-based polyurethane. The m-coat™ finish repels water, while Breathatec® prevents water penetration, making the material suitable for sudden heavy rain or downpours.
The leather trim uses chrome-tanned leather from MONFRINI PELLAMI S.R.L., a long-established tannery founded in 1898 and located in Milan, Italy.
After chrome tanning, a blend of highly pigmented and transparent dyes is applied using a roller-coaster finishing machine to create a semi-aniline finish with vivid and elegant coloration.
Though a plain smooth leather, it features a clean surface with a refined sheen. This premium leather reflects the high fashion sensibility characteristic of MONFRINI PELLAMI’s European craftsmanship.
By inserting 5mm thick high-foamed polyethylene padding into one side of the shoulder section, strain on the shoulder is reduced. The double-ring fastening and symmetrical front and back body design allow comfortable use regardless of dominant hand.
The side pocket with an adjustable cord stopper is suitable for storing bottles, and the carabiner attached to the cord-end part enables storage of keys and IC cards as well.