

Portwest DX421 Work Trouser 4-Way Stretch DX4
4-Way Stretch Trade Pants with Knee Protection - Portwest
The Portwest DX421 Trade Pants DX4 are ergonomically designed to provide maximum mobility during demanding work. Strategic placement of dynamic 4-way stretch fabrics ensures comfort in every position, while the high back waistband with side elastic offers extra protection. Pre-shaped, top-adjustable knee pads, deep front pockets, and versatile zipped thigh pockets keep your tools, phone, and pens safe. Reinforced with triple stitching, these pants deliver exceptional durability while maintaining a slim and comfortable fit.
- 4-way stretch fabric: Maximum freedom of movement and comfort
- Triple-stitched seams: Added durability for heavy-duty work
- Ventilation openings: Improved breathability
- Knee protection: Two-position knee pad pockets
- Multiple compartments with zips: Safe storage for tools and personal items
- Zakken: 8 storage pockets; 2 side pockets; 2 back pockets (1 open, 1 with flap); 1 cargo pocket; 1 chest pocket with zip; phone pocket; pen pocket; hammer loop; foldable ruler pocket; thumb loop
- Gusset: Reduces stress on seams during movement
- High back waistband: Good coverage in all working positions
- Elastic waistband: Ultimate wearer comfort
- Pre-shaped knees: Enhanced freedom of movement
- Extendable leg length: 31" to 33"
- Zip closure: Portwest button fastening with easy-grip sliders
- Reinforced points: Bar tacks on all critical areas
- Slim fit design: Close-fitting without restricting movement
Material
Outer fabric: Titanmill Pro Stretch 93% Polyester, 7% Elastane, 270g.
Contrast fabric: CorePro 87% Nylon, 13% Elastane.
Product Care
- Machine wash: Max 40°C, normal process
- Bleaching: Not allowed
- Tumble drying: Do not tumble dry
- Ironing: Do not iron
- Dry cleaning: Not permitted
DX4
Push your limits with the dynamic Portwest DX4 workwear collection. This range combines premium stretch fabrics with robust Oxford panels and advanced designs to deliver maximum functionality, mobility, and comfort from work to leisure.
Frequently Asked Questions about the Portwest DX421 Trade Pants DX4
- Do knee pads come included? No, knee pads are sold separately and fit into the top-adjustable pockets.
- Are the thigh pockets secure? Yes, all thigh and other pockets have zips or flaps for secure storage of tools and personal items.
Positive points
Dynamic 4-way stretch fabric for active mobility
Triple-stitched seams for reinforced durability
Multiple secure storage pockets with zips
High back waistband and gusset for comfort
Pre-shaped knees with extendable leg length
Product description
4-Way Stretch Trade Pants with Knee Protection - Portwest
The Portwest DX421 Trade Pants DX4 are ergonomically designed to provide maximum mobility during demanding work. Strategic placement of dynamic 4-way stretch fabrics ensures comfort in every position, while the high back waistband with side elastic offers extra protection. Pre-shaped, top-adjustable knee pads, deep front pockets, and versatile zipped thigh pockets keep your tools, phone, and pens safe. Reinforced with triple stitching, these pants deliver exceptional durability while maintaining a slim and comfortable fit.
- 4-way stretch fabric: Maximum freedom of movement and comfort
- Triple-stitched seams: Added durability for heavy-duty work
- Ventilation openings: Improved breathability
- Knee protection: Two-position knee pad pockets
- Multiple compartments with zips: Safe storage for tools and personal items
- Zakken: 8 storage pockets; 2 side pockets; 2 back pockets (1 open, 1 with flap); 1 cargo pocket; 1 chest pocket with zip; phone pocket; pen pocket; hammer loop; foldable ruler pocket; thumb loop
- Gusset: Reduces stress on seams during movement
- High back waistband: Good coverage in all working positions
- Elastic waistband: Ultimate wearer comfort
- Pre-shaped knees: Enhanced freedom of movement
- Extendable leg length: 31" to 33"
- Zip closure: Portwest button fastening with easy-grip sliders
- Reinforced points: Bar tacks on all critical areas
- Slim fit design: Close-fitting without restricting movement
Material
Outer fabric: Titanmill Pro Stretch 93% Polyester, 7% Elastane, 270g.
Contrast fabric: CorePro 87% Nylon, 13% Elastane.
Product Care
- Machine wash: Max 40°C, normal process
- Bleaching: Not allowed
- Tumble drying: Do not tumble dry
- Ironing: Do not iron
- Dry cleaning: Not permitted
DX4
Push your limits with the dynamic Portwest DX4 workwear collection. This range combines premium stretch fabrics with robust Oxford panels and advanced designs to deliver maximum functionality, mobility, and comfort from work to leisure.
Frequently Asked Questions about the Portwest DX421 Trade Pants DX4
- Do knee pads come included? No, knee pads are sold separately and fit into the top-adjustable pockets.
- Are the thigh pockets secure? Yes, all thigh and other pockets have zips or flaps for secure storage of tools and personal items.
Fitting
- Fit: Slim Fit
- Sizes: 28 - 48

Short specifications
| SKU | DX421 |
|---|---|
| Category | Long work trouser |
| Professions | Construction, Electrician, Paver, Roofer, Carpenter, Infrastructure, Demolition / Heavy Duty, Logistics Employee, Warehouse worker, Transport, Driver, Security Clothing, Facility Services, Waste Processing, Industry & Technology, Mechanic's Clothing, Mechanical, Free Time, Indoor/Outdoor Activities |
| Collection | DX4 |
| Features | Breathable, Comfort, Durable, Ergonomic, Knee reinforcement, Tear resistant, Abrasion resistant, Stretch, 4-way stretch |
| Brand | Portwest |
| Size | 34, 36, 38, 40, 42, 44, 46, 48, Other sizes |
| Material | Elastane (Stretch), Nylon, Polyester, Other Materials |
| Material thickness | Medium weight - 200 to 290 g/m2 |
| Pockets | Back pocket, Hammer loop, Without holster pockets, Pen compartment, Knee pockets, Side pockets, Phone pocket |
| Standards | EN 14404 |
| Closure | Button, Zipper |
| Color | Black |
| Sexe | Men |
| Land van fabricage | United Kingdom |












