RegEx for a bad time format

See more:

C#

HTML

regular-expression

Hi
Trying to get a regex for this in c#
Im using XPath to loop thorugh all 'td' cells in a row and want to get the cell that contains a time, but the time is only in this format
some examples

15h 9m
1h 3m
2h 34m

it will never be more that 24 hours so thats no an issue...I really dont know regex very well and am struggling. I have something like this

string t = "15h 9m";
regex = new Regex(@"*h.*m");
match = regex.Match(t);

so its
1 or 2 chars the a letter 'h'
then a space
then one or 2 chars then a letter 'm'

Help appreciated

Thanks