Check for f1life promo code exclusions. f1lifepromo codes sometimes have exceptions on certain categories or brands.
These offers are usually only available for part of the day because they're considered exceptionally good, but lately f1life has been offering it all day long
Look for the blue "site-wide" label for site-wide f1life promo codes. Site-wide codes can be applied to any item on f1life website, and therefore are the most useful codes.