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Cookie categories

  • Necessary

    Keeps the site working: your session, security, language and checkout. These cookies are always on because the site cannot work without them.

  • Analytics

    Off by default

    Measure visits so we can improve the site; no advertising profiles.

Cookies we use

Cookies we use, their purpose, category and lifetime
CookiePurposeCategoryLifetime
nifexpress_sessionMaintains your logged-in session and the multi-step checkout state. Without this cookie the site cannot function.Necessary8 hours
nif-consent-v2Records your cookie choices (which categories you accepted or declined) so we do not ask again. Kept in your browser's local storage; it is never sent to our servers.Necessary6 months, then we ask again
nif_utmRecords the campaign parameters (utm_*utm_*, gclidgclid) of the advert you arrived from, so we can tell which advert produced an order. Only written after you turn on Analytics.Analytics (advertising measurement)30 days
__cf_*Set by Cloudflare to identify trusted web traffic and protect against DDoS attacks.Necessary (security)30 days
__stripe_mid, __stripe_sidSet by Stripe on the payment page to detect fraud. Only active on the checkout page.Necessary (payment security)1 year / 30 minutes
_ga, _ga_*Set by Google Analytics 4 to distinguish unique visitors and measure site usage. IP addresses are anonymised. Data is processed by Google LLC. See Google's Privacy Policy.Analytics2 years
_clck, _clskSet by Microsoft Clarity, only after you accept and only on our public information pages, to record pseudonymised session replays and heatmaps. _clck keeps the Clarity user ID and preferences; _clsk joins a visitor's page views into one session recording. Data is processed by Microsoft Corporation. See Microsoft's Privacy Statement.Analytics1 year / 1 day
CLID, MUID, ANONCHK, MR, SMThird-party cookies that Microsoft lists for Clarity (same conditions). CLID identifies the first time Clarity saw a browser on any site that uses Clarity. MUID identifies unique web browsers visiting Microsoft sites and is used by Microsoft for advertising, site analytics and other operational purposes. ANONCHK, MR and SM are linked to MUID: they indicate whether MUID is passed to the advertising cookie ANID (always 0, because Clarity does not use ANID), whether to refresh MUID, and they synchronise MUID across Microsoft domains.AnalyticsNot stated by Microsoft

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