"The Promise" EcoVero T-Shirt
"The Promise" EcoVero T-Shirt
"The Promise" EcoVero T-Shirt
"The Promise" EcoVero T-Shirt

"The Promise" EcoVero T-Shirt

Regular price €44.90 Sale price€34.90 Save 22%
Tax included. Shipping calculated at checkout.

  • Low stock - 2 items left
  • Inventory on the way
Details / Size chart


  • EcoVero Jersey T-Shirt (Athleisure)
  • Unisex Fit
  • 70% EcoVero Viscose, 30% Organic Cotton
  • 155 GSM (mid-weight)
  • Very soft and comfortable
  • Excellent heat-management


  • Lenzing EcoVero Textile
  • FairWear certified
  • GOTS certified
  • Oeko-Tex Standard 100
  • Vegan (PeTA-Approved) 

    Size Chart

    1/2 Chests (a) Body Length (b)
    XS 46 cm 68 cm


    48.5 cm 70 cm
    M 51 cm 72 cm
    L 54 cm 74 cm
    XL 57 cm 76 cm
    XXL 60 cm 78 cm

    Willpower EcoVero T-Shirt Size Chart
    Make a choice
    • Free shipping 60€ (Germany) 120€ (World)
    • Same-Day-Shipping for orders until 1:00 p.m.
    • Secure Checkout

    First time introduction of our new EcoVero Athleisure Shirt. Highest social and ecological standards combined with an awesome cut and feel. "The Promise" Pocket Print. That's it. Made from 70% EcoVero™ Viscose (derived from certified renewable wood sources) and 30% Organic Cotton. Up to 50% lower emissions & water impact than generic viscose. Also FairWear Certified, Peta approved vegan and Oeko Tex 100 standard. This garment belongs to our PRIME Collection.

    We all made a promise to ourselves. The promise to go outside and give that run the very best we can. To push ourselves beyond our previous limits. The promise to not complain until the job is done. 

    Male model is 1.78 and wears small (S). This is an unisex t-shirt.

    Shipping Rates

      • GERMANY: 3.50€ (Free Shipping over 60.00€)
      • EUROPE (EU): 8.00€ (Free Shipping over 150.00€)
      • WORLD: 24.00€ (Free Shipping over 120.00€)


      Same-Day Shipping for orders before 1:00 pm (13:00h). All other orders are being shipped within 24h.


      We really want you to be happy with your Willpower stuff. That's why you can return any item any time if it doesn't fit you or you don't like it. You will receive your money back or exchange, as you wish. No time limit. Just follow the instructions in our Returns Center.

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      Body Type


      Product Status



      Lenzing EcoVero (50% less water & emission), Organic Cotton, Fair Wear certified, GOTS certified, Oeko-Tex Standard 100, PeTA-Approved Vegan


      Plastic Free


      70% EcoVero, 30% Cotton


      The Promise

      For Runners With Attitude

      Why Willpower

      Willpower is a value driven running brand for proud athletes, who oppose the mainstream.

      Find Out More

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