Redirect Error in Sitemap

[macfink]

I have looked at the site map again and its stating this error

URLs not followed
When we tested a sample of URLs from your Sitemap, we found that some URLs redirect to other locations. We recommend that your Sitemap contain URLs that point to the final destination (the redirect target) instead of redirecting to another URL.
HTTP Error: 301
URL:
http://www.freakfish.co.uk/surf-prod...hing/hats-caps
Problem detected on: Oct 4, 2011

I have no idea what this is about?