Sunlite Standard Presta Valve Tubes, 16 x 1.375" (349 x 25)

These tubes are made by Kenda which is extremely reliable. The width and diameter by Sunlite fits exactly for a Schwalbe Kojak tire. I will buy more! The customer service is really good! At first they shipped the wrong tubes and I got the correct ones right away, they told me to keep the wrong ones without hassling with returning! Very pleased with the service.

How good are these tubes? It doesn't matter! Good luck finding any other 16" tubes anywhere. That being said, they're pretty okay. They get punctures occasionally, but...come on. They're bike tubes.

just what I would have gotten from REI or Walmart. I use Schwalbe Marathon plus tires and never flatted a bike tire. I failed to put the same quality tires on my trailer and it flatted, that's not the tube's fault, just the boob that didn't spring for amazing tires. This is a good buy.

it is doughnut shaped and it holds air! tough to find a presta valve tube at this size, but here it is. Have a recumbent bike, so the tire sizes are strange

The 20” tubes were not 20”. Does not fit.