30 Days to Fall in Love with Merino. Then you can return it… But we know you won’t want to.

Take Smartwool’s Base layer & Everyday Merino for a 30-day test drive.

Built for natural performance and everyday comfort, these layers are ready for commutes, chill time — and serious adventure. Hike, run, climb, or kick back for 30 days. If they don’t win you over, return them in any condition for a full refund, shipping included. Full terms and conditions at the bottom of the page (*).

Styles To Try

Womens Mens

(*) The 30-day Wear Test is valid on selected Merino wool styles – for both men and women from 18/09/2025 to 22/11/2025. The 30-Day Wear Test is only applicable to identified products purchased directly from Smartwool websites at www.smartwool.eu and smartwool.co.uk. The 30-Day Wear Test commences upon delivery of goods to consumer and concludes exactly 30 calendar days thereafter. In the event that a consumer is dissatisfied with a qualifying product, they must contact Smartwool’s customer service before the end of the 30-Day Wear Test to initiate a full refund as follows: registered users can access the "Return" section of their user dashboard and manage return requests; unregistered users must complete the form at the “Guest” section. Qualifying 30-Day Wear Test products may be worn, but must be returned in all their parts. Important Restrictions: 30-Day Wear Test is not applicable to similar qualifying products purchased before 18/09/2025 of the 30-Day Wear Test. The initiative is available for a limited time only and subject to change without notice. By purchasing a product under the 30-days-wear test program, the Customer agrees that our Customer Care team may contact them, using the contact details provided at the time of purchase, in order to request feedback regarding the purchased product and/or to better understand the reasons for a return. This communication is solely intended to improve the quality of our products and services and does not serve any promotional purpose.