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Purchase Organic & Sustainable Products

By choosing yarns from our Organic & Sustainable Products collection, you're not only creating beautiful handcrafted pieces but also making a positive impact on the planet. From reducing carbon footprints to supporting ethical farming practices, your purchase supports a more sustainable textile industry.

At String Theory Yarn Co., we're passionate about supporting a sustainable future for our planet. So, in addition to yarns, we have a selection of eco-friendly home goods and gifts.


  • Handspun Hope Cotton - String Theory Yarn Co
    Handspun Hope

    Handspun Hope Cotton


    This lovely cotton yarn is laboriously handspun on a drop spindle in Ethiopia by women working for a small cooperative comprised of single mothers....

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  • Madelinetosh

    Woolcycle Sport


    Woolcycle Sport delivers strong stitch definition, bright colorwork, and pleasurable stitching. 100% Upcycled Superwash Wool Sport-weight | 4-ply ...

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  • Handspun Hope

    HH Angora blend


    Humanely-sourced from their own flocks of bunnies and sheep, this 50/50 blended sport weight is Handspun Hope's most luxurious yarn yet! This incre...

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