Fox Racing Flexair Pro Fire Alpha TrousersUsing Polartec® Alpha® insulation, the Fox Racing Flexair Pro Fire Alpha Trousers provide brilliant warmth for colder days of mountain bike riding. But they also provide adaptable breathability so you don't get too hot and sweaty. Pull-on layers when it's cold. Take them off again when you get too warm. Dressing for cold weather on the bike can be a pain, but the Flexair Pro Fire Alpha Trousers make that hassle a thing of the past. This is all thanks to the Polartec® Alpha® insulation. Not only does this do a brilliant job of keeping in warmth it has adaptable breathability too - as soon as sweat-vapour and moisture build-up excessively it lets more of it escape so you're never left feeling damp and chilly when pedalling hard. Fox also use TruDri® fabric inside the trousers, pulling sweat off your skin. And to the outside, a DWR (Durable Water Repellent) finish shrugs off moisture and dirt from wet and muddy trails.  As you'd expect the Flexair Pro are tailored to move with you, keeping you mobile and unrestricted both uphill and downhill. Tapered legs prevent snagging and at the waist the race-ratchet closure allows precise adjustment, even on the fly.When the plunging temperatures of winter hit but you'll still be out mountain biking, you'll be more than happy to pull on the cosily warm Flexair Pro Fire Alpha Trousers. Features:Materials: 88% Polyamide, 12% ElastanePolartec® Alpha® insulation features adaptable breathabilityProven race-ratchet closure provides secure fit and quick on-the-fly adjustmentsSecure zip hand pocketsTapered lower leg reduces snag and dragTruDri® fabrics move sweat away from body to keep you dryDWR finish sheds moisture, dirt, and debrisBuy Fox Racing Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.