The new DOC BLUE - for an even better transition to Tubeless. Stans No Tubes production! Can be used of course for puncture protection for tires, prestas, and normal tire-less systems. 60ml bottle Use: 60ml/tire (road 30ml) is effective for approx. 2-7 months. Afterwards it dries out and creates a rubber film. It can be renewed several times. Only for tires with replaceable valve. Not suited for serious punctures (slashes, cracks).