https://www.burton.co.uk/product/mountain-warehouse-forest-trekking-trouser-built-in-belt-waterproof-pants_p-5591a0ac-93f2-4e95-a81b-1dfb76efe603£colour=Green&size=40R

The Forest Mens Trekking Trousers are designed for trekkers and hikers. Made with water-resistant treatment and reinforced fabric on areas of stress (knees and seat) for more protection. The fabric is very stretchy allowing some freedom of movement. They come with a built-in belt for a better fit. Ideal for long summer walks as they also protect you from the sun rays. (Ref: 039987) | Mountain Warehouse Men Forest Trekking Trouser Built in Belt Waterproof Pants in Green | Size: 40R - Manufacturers part number: 039987025007

• 2 year warranty - Includes a 2-year warranty for guaranteed quality and peace of mind
• Regular Length Mens - 81cm/32 inches, good fit and stylish
• Reinforced Fabric - Reinforced seat and knees for longlasting wear and comfort
• UPF 50+ - With sun protection factor treatment of 50+
• 4-Way-Stretch - The fabric will stretch lengthways & widthways, providing a better fit, more flexibility and comfort
• Water-Resistant - Treated with durable water repellent (DWR), droplets will bead and roll off the fabric. Ideal for Light rain, or limited exposure to rain