In the production year of 2008, we switched manufacturing locations and some customers who were on the edge of their size ended up needing to size up after that. This is the same time that we officially started suggesting a 1/2 size up from your normal KEEN size, but they've always fit a little small.

Do Keens run true to size?

The shoes run true to size. 11 with normal socks should do. ... I would stick with your normal size. Most all Keen shoes I take a half size larger, but not these.

Should I size up in KEEN?

As a general rule, go up 1/2 size from your standard shoe size then work from there. A few more issues you may want to consider: KEEN with the eVent or KEEN. DRY water resistant membrane tends to have less interior volume in the toe box area of the shoe, so sizing up to some extent is sometimes necessary.