2x 16" Inner Pram Tubes BoB Stroller Tire Tube Revolution SE/Pro/Flex/SU/Ironman

To find the size simply check on the Tyre sidewall for details. and the second number being the tyre width. Tube size "20 x 1.75 / 2.125" will fit a tyre that says "20 x 1.95". HIGH QUALITY INNER TUBE x 2.

eBay