Alpinestars MTB Tech Top Long Sleeve Base LayerFitting under your mountain bike jersey on a cool day, the Alpinestars MTB Tech Top Long Sleeve Base Layer brings you improved comfort via excellent sweat-management and the natural warmth of technical fibres.Maintaining comfort when mountain biking during the cooler months of the year is a fine balance of keeping the cold at bay when swooping downhill but ensuring you keep sweat-free when you’re putting in more effort on tougher sections of trail. It’s here the MTB Tech Top Long Sleeve Base Layer really shines.A mix of quick-wicking synthetic fibres offers both natural warmth and heat-regulation. This blend of functional fabrics provide outstanding moisture control whether riding hard or letting gravity do the work. Open mesh inserts also provide a boost to breathability so you don’t overheat. The seamless tubular construction is incredibly comfortable to wear and flat-lock seams prevent irritation while also allowing maximum flexibility as you speed over challenging mountain bike trails.Features:Materials: 63% Polypropylene, 25% Polyamide, 12% PolyesterAnatomically optimized and ultra-lightweight technical base layerMoisture-wicking fibres aid all-round body temperature control and performance at cold temperaturesStrategically positioned open mesh inserts for ventilationSeamless tubular construction allows for performance compression fitFlat-lock ergonomic seamsBuy Alpinestars Clothing from Chain Reaction Cycles, the World’s Largest Online Bike Store.