SIDAS 3Feet Merino Mid Insoles

please select a Size
Choose a shipping method
To buy, sign in as an REI Co-op Member or join now.
Members get an estimated $6.50 back on this item.

Members, get an estimated $6.50 back on this item as a part of your annual .

Designed to be warm, comfortable and supportive for feet with medium arches, SIDAS 3Feet Merino Mid insoles offer thermoregulation and odor resistance for skiing, 'boarding and other snowy pursuits.

  • Features

    • Say goodbye to smelly ski boots, shoes or winter boots, thanks to the odor-resistant properties of merino wool
    • Added synthetic fibers (40%) into the merino (60%) topsheet improve durability
    • A thin sheet of aluminum throughout the insole increases insulation from the elements and reduces discomfort and loss of performance from having cold feet
    • Proprietary 3Feet® technology allows SIDAS to tune the EVA shell to your foot type, providing pressure distribution and added foot support, for an optimal fit
    • Arch-specific cutouts under the midfoot allow your feet to remain active during your whole workout
    • Designed for medium arches, EVA shell has a medium height with the optimal number of cutouts for natural motion and support without compromising flex or feedback underfoot
    • Engineered EVA foam layer in the forefeet delivers all-day comfort with superior cushioning for your toes
    • Heel cups help stabilize your feet and ankles, increasing precision and control for all winter activities


    View all SIDAS Insoles
  • Technical Specs

    Best Use


    Downhill Skiing



    Merino/synthetic blend topsheet; EVA shell; aluminum inner-sheet; EVA multidensity foam

    Insole Volume

    Medium Volume



  • Size Chart

    U.S. Men's 3-4 5-6 7-8 9-10 11-12 13-14
    EU 35-36 37-38 39-41 42-43 44-45 46-48
    UK 2-3 4-5 6-7 8-9 10-11 12-13

    Sizing Notes

    For insoles, please use shoe size.

  • Reviews
    9 reviews with an average rating of 4.3 out of 5 stars

    Loading Reviews...
  • Questions & Answers

    Loading Questions...