The Reservetank from Lightweight comes in choice of black or white, and 500mL or 750mL sizes.

Note: Sold as a single bottle. Select the size from the drop down menu.

Specifications
Material: Plastic
Size: 500mL or 750mL
Compatible with all standard size bottle cages

Mfr Claimed Weight
74g (500mL)
94g (750mL)