Portwest Ultimate Modular 3-in-1 Trouser CL.1 BX321

Portwest Ultimate Modular 3-in-1 Work Trouser CL.1 BX321

Looking for work pants that adapt to your job rather than the other way round? The Portwest Ultimate Modular 3-in-1 Trouser CL.1 BX321 is engineered for professionals who demand flexibility without compromise. This ingenious design transforms from full-length trousers to shorts to high-visibility workwear in seconds, giving you genuine versatility on site. Built with four-way stretch CorePro fabric, these work trousers deliver exceptional movement and all-day comfort in a slim fit profile. What really sets this pair apart is the storage capability: 15 pockets including magnetic-fastening pockets, thigh cargo pockets, knee pockets for protective inserts, and a unique clip-on pocket system that lets you attach three additional pockets wherever you need them most. An adjustable waistband ensures a perfect fit every time, whilst the reversible design maximises functionality across different working conditions.

Key Features

• Four-way stretch fabric for superior movement and comfort
• Transforms from full-length trousers to shorts to high-visibility workwear
• 15 storage pockets including clip-on pocket system
• Knee pockets compatible with protective inserts
• Adjustable waistband for customised fit

Recommendations from our Unishore Expert

These work trousers are built for the professional who values efficiency on the job. The four-way stretch fabric composition delivers the flexibility you need during demanding physical tasks, whilst maintaining structural integrity throughout your working day. The knee pocket compatibility means you can add protective inserts when working on hard surfaces, keeping your knees properly supported without being locked into a single configuration. The sheer number of pockets and that brilliant clip-on system transforms how you organise your essentials, reducing time wasted searching for tools and keeping everything within arm's reach. The adjustable waistband adapts to your body and layering requirements, eliminating uncomfortable bunching or gaps. This is an investment in work trousers designed to work as hard as you do.

Product Features

• Material - CorePro: 88% Nylon, 12% Elastane
• Pockets - 15 storage options including magnetic-fastening pockets, thigh cargo pockets, knee pockets, and three clip-on pockets
• Closure - Button and zip
• Leg Length - Long leg length
• Article Number - BX321

Standards and Safety

• High-visibility Class 1 certified to EN 20471 when panels are visible
• Provides knee protection support to EN 14404: 2004 + A1: 2010 Type 2 Level 0 when used with compatible inserts
• UKCA marked for UK market compliance
• CE certified for European safety standards