A nerdy, dorky question: I noticed a lot of riders in the Giro wearing a bracelet, different colors, looked rubber like the Livestrong bracelet but it is not the Livestrong bracelet. Same case with the Tour. Petacchi is wearing one that can be seen clearly in his victory salute. Same with Ryder Hesjedal in the feature on the Slipstream team meeting in their bus. Anyone know what it is?