Santini 365 armwarmersthe tour thermofleece fabric in these santini 365 arm warmers makes them perfect to pair with short sleeve jerseys for extra comfort and warmth when the weather is cooler silicone grippers at both ends of the arm warmers ensure they stay in place featuresmaterial 80 polyamide 20 elastanetour thermofleece fabricsilicone grippertechnologiestour thermofleece fabric a high stretch thermal fleece fabric with a soft hand feel and excellent insulation characteristics tour