Good question! This is kind of important and depends on your height and the type of bike you're buying.
Please please please check out our size guide before you put down any of your hard earned cash. Our number one rule for customers is to make sure you're buying a bike that will fit you.
Don't try and squeeze onto a bike too small or too big for you – you'll just end up looking like a circus clown and wrecking your knees / back / street cred. Thanks.
If you've got any doubts or queries about this or any aspect of buying a bike, please email us on firstname.lastname@example.org or call 020 7733 8098.