This 28 mm - 32 mm tube size fits 622 mm rims with 700c x 28 mm - 37 mm tyres as well as 630 mm rims with 27 / 28 inch x 1 1/8 - 1 5/8 tyres.
Since tubes are stretchy, they do not need to exactly match the size of the tyre.
This inner tube fits ETRTO tyre sizes as shown below:
28-622 - 700 x 28C - 28 x 1 5/8 x 1 1/8
32-622 - 700 x 32C - 28 x 1 5/8 x 1 1/4
35-622 - 700 x 35C
37-622 - 700 x 37C - 28 x 1 5/8 x 1 3/8
32-630 - 27 x 1 1/4, 27 x 1 1/8
Valve length: 42 mm
Weight: 200g
Made in China