Which bike size will fit me? Support November 28, 2018 13:58 Updated Follow Some of our adults bikes come in two sizes. To find your size, see our sizing chart here. Click here to go back to our website. Related articles Which bikes are better for hills? Where can I buy Bobbin bikes? What's the difference between the Brownie 3, 7 and 21 ? Do you have a retail shop? Does Bobbin accept Cycle to Work vouchers? Comments 0 comments Article is closed for comments.