Cookie Policy

October 29, 2026

About this policy

This policy explains the cookies and similar technologies used on this site, what each one does, and how you can control them.

Cookies are small text files a website stores in your browser. We also use similar technologies: browser local storage, which works like a cookie but is not sent to our servers, and tracking pixels or scripts from our partners, which can set cookies or send information about your visit to them.

Some cookies are set by us (first-party cookies). Others are set by partners whose services we use (third-party cookies), and some of those partners also set cookies on their own websites' domains. For how we handle personal information more generally, see our Privacy Policy.

Your choices

Analytics and advertising cookies are off until you allow them. When you first visit, a banner lets you accept all cookies, accept only necessary cookies, or customize your choice by category:

CategoryDefaultWhat it covers
FunctionalityAlways onFeatures the site needs to work, such as your cart and your cookie choices
SecurityAlways onProtecting the site and your account
PersonalizationOffRemembering preferences to tailor content
Ad cookies, ad user data, ad personalizationOffMeasuring our advertising and showing relevant ads on other sites
AnalyticsOffUnderstanding how visitors use the site so we can improve it

We store your choice for 182 days, after which we ask again. You can change it at any time using the Cookie settings link in the footer of every page.

Global Privacy Control: if your browser sends a Global Privacy Control (GPC) signal, we treat it as a request to opt out, and our analytics and advertising tags do not run, whatever you choose in the banner. The one exception is affiliate tracking: if you have accepted ad cookies, our affiliate network Awin still records a completed purchase so that the partner who referred you can be paid.

Browser controls: you can also block or delete cookies in your browser settings. Blocking all cookies may stop parts of the site, such as the cart, from working.

Cookies set for all visitors

These cookies are set whatever you choose in the banner, because the site needs them to work or to record where your visit came from.

CookieSet byPurposeDuration
cc-settingsConcept2Remembers your cookie consent choices182 days
gesso-cartIdConcept2Keeps track of your shopping cartSession
AwinChannelCookieConcept2, for AwinRecords whether you reached us through an affiliate link or another channel, so affiliate sales are credited correctly. It holds no personal information.30 days
__cf_bmCloudflareTells people apart from automated bots to protect the site from abuse30 minutes
cf_clearanceCloudflareRemembers that your browser passed a security check, so you are not asked again1 year
gesso-authConcept2Keeps you signed in to your Concept2 accountSession

If you use our help chat, Zendesk may also set functional cookies needed to run the conversation.

Session cookies are deleted when you close your browser.

Analytics cookies

With your consent to analytics, we use Google Analytics to understand how visitors use the site: the pages viewed, how long visits last, how visitors arrived, and what they click. We use this to improve the site, not to identify you.

CookieSet byPurposeDuration
_gaGoogle AnalyticsDistinguishes one browser from another to count visitorsUp to 2 years
_ga_<ID>Google AnalyticsKeeps track of your current visit. <ID> is replaced by our Google Analytics property ID.Up to 2 years

Analytics consent also allows us to measure how embedded YouTube videos are played. YouTube may set its own cookies when you watch a video; see YouTube's privacy policy.

Google explains how it uses this information at How Google uses information from sites that use its services. You can also install the Google Analytics opt-out browser add-on.

Advertising and marketing cookies

With your consent to ad cookies, our advertising partners can tell when a visit or purchase follows one of our ads, build audiences of past visitors, and show you relevant ads on other sites.

CookieSet byPurposeDuration
_fbpMeta (Facebook, Instagram)Measures visits and purchases from Meta ads and builds ad audiences90 days
_gcl_auGoogle AdsLinks visits and purchases to Google ads90 days
_uetsidMicrosoft AdvertisingLinks activity in a visit to Microsoft ads1 day
_uetvidMicrosoft AdvertisingRecognizes a returning browser for Microsoft ad measurement13 months
__obrefOpenAIMeasures visits and orders from OpenAI ads1 year
lanternAwinCredits sales to the affiliate partner that referred you30 days

These partners may also set or read cookies on their own domains (for example facebook.com, google.com, doubleclick.net and bing.com) when their scripts load. Microsoft and Google also keep copies of their identifiers in your browser's local storage, under the same consent. Their use is described in their own policies:

Other storage

Some features store information in your browser's local storage instead of cookies. It stays on your device until you clear it.

ItemSet byPurpose
cookie_consent__user_identityConcept2Links your cookie choices to your browser
gesso-pinned-itemsConcept2Remembers items you have saved while browsing
__PayPalSDK_storage__PayPalSupports PayPal payment options shown on the site
tm-identifierPayPalSupports PayPal's payment options and their security checks

Changes and contact

We review this policy when we add or remove services on the site, and we update the date at the top when it changes.

For any questions about cookies or this policy, please contact us on [email protected].