Legal
Cookie policy
Last updated: 15 October 2026
Cookies are small text files stored on your device when you visit a website. We use them to make our site work, and, only if you agree, to understand how it's used and to show you relevant adverts. This policy explains which cookies we use and how you can control them, in line with the Privacy and Electronic Communications Regulations (PECR) and UK GDPR.
Your choices
When you first visit, our cookie banner lets you accept or decline non-essential cookies. We don't set analytics or marketing cookies unless you accept them. You can change your mind at any time using Cookie settings, or by clearing cookies in your browser.
Strictly necessary cookies
These are needed for the site to work: keeping items in your basket, checkout, signing in, security and remembering your cookie choice. They don't need consent and can't be switched off.
| Cookie | What it does | How long |
|---|---|---|
cart, cart_sig, cart_ts |
Keep track of your basket | Up to 2 weeks |
_shopify_essential, secure_customer_sig |
Secure sign-in and checkout, and keep the store running | Up to 1 year |
_tracking_consent |
Remembers your cookie choices | 1 year |
localization, cart_currency |
Remember your country and currency | Up to 2 weeks |
keep_alive, _cmp_a |
Keep your session and consent working smoothly | Session to 1 day |
Analytics cookies (only with your consent)
These help us understand how people use our site, such as which pages are visited and how people get to us, so we can improve it.
| Cookie | What it does | How long |
|---|---|---|
_shopify_analytics, _shopify_y, _shopify_s |
Shopify analytics: visits, pages viewed and sessions | Session to 1 year |
_shopify_sa_t, _shopify_sa_p |
Shopify analytics about marketing and referrals | 30 minutes |
Marketing cookies (only with your consent)
These are set by us and our advertising partners, such as Meta (Facebook and Instagram), to show you relevant adverts on other sites and to measure how well our adverts work.
| Cookie | What it does | How long |
|---|---|---|
_shopify_marketing |
Shopify marketing preferences and attribution | Up to 1 year |
_fbp, fr |
Meta: shows and measures adverts on Facebook and Instagram | Up to 90 days |
The exact cookies can change as our providers update their services. For Shopify's full list, see Shopify's cookie policy.
Managing cookies in your browser
Most browsers let you see, block or delete cookies in their settings. Blocking strictly necessary cookies may stop parts of our site, such as the basket and checkout, from working.
More information
Questions about cookies or your data? Email hello@calcuera.com. For how we use personal data generally, see our Privacy policy.