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JOIN OUR ANNIVERSARY HOOPLA - CELEBRATING 20 YEARS!
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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.

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  • String Theory Yarn Co

    String Theory Fan Club

    $19.00

    String Theory Fan Club: Where Craft and Compassion Connect! Fan Club enrollment is open until midnight on Sunday, December 10. The next enrollment...

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  • Blue Sky Sweater - String Theory Yarn Co
    Blue Sky Sweater - String Theory Yarn Co
    Blue Sky Fibers

    Blue Sky Sweater

    $24.00

    Soft, family friendly and machine washable. Blue Sky Sweater (formerly known as Spud and Chloe Sweater) is versatile and the perfect blend of super...

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  • -

    Misha & Puff

    $32.00

    This yarn is listed as worsted, but it knits up beautifully from 14 - 22 stitches per inch - just depends on what kind of fabric you are looking fo...

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  • Clean Cotton in Yarn - Worsted | String Theory Yarn Co
    -

    Clean Cotton

    $7.00

    Eco-friendly reclaimed fiber dappled with bright color for maximum joy. It feels good, and you'll feel good using it! 55g/96 yds  I  85% recycled ...

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  • Mota - String Theory Yarn Co
    Wooldreamers

    Mota

    from $17.00

    Mota is a lofty 3 ply, with a strong twist for durability. Because of the loft, Mota can be used in patterns that call for DK, Worsted, Aran and ma...

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  • Handspun Hope Cotton - String Theory Yarn Co
    Handspun Hope

    Handspun Hope Cotton

    $35.00

    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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  • Earth Friendly Stripes Kit - String Theory Yarn Co
    Earth Friendly Stripes Kit - String Theory Yarn Co
    String Theory Yarn Co

    Earth Friendly Stripes Kit

    $51.00

    This pattern was designed for the Chicago Yarn Crawl and is included for free with the kit.Every year during the crawl, we highlight a yarn company...

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  • Unpaper Towels - String Theory Yarn Co
    Unpaper Towels - String Theory Yarn Co
    -

    Unpaper Towels

    from $22.00

    Keep your house clean and the earth cleaner when you make the swap to UNpaper® Towels. Reduce waste and your footprint when you ditch traditional p...

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  • Handspun Hope

    Hello, Hope Gift Package

    $275.00

    With your purchase of a Hello, Hope package, you hold the power to help a Rwandan woman break the generational cycle of poverty in her family and b...

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  • Madelinetosh

    Woolcycle Sport

    $33.00

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

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  • Queensland

    Dungarees

    $16.50

    Dungarees yarn is made from recycled jeans! How cool is that? This cotton blend has a tweedy appearance. Made in Italy, this soft yarn knits up int...

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  • Remix Light - String Theory Yarn Co
    Berroco

    Remix Light

    $15.00

    This DK weight wool-free yarn from Berroco is made of 100% recycled fibers using a low-impact manufacturing process patented in France. Garments an...

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  • Corozo Buttons - String Theory Yarn Co
    Corozo Buttons - String Theory Yarn Co
    -

    Corozo Buttons

    Original Price $1.50
    Current Price $0.50

    Close a cardigan, add three to a mitten cuff, or embellish a hat! These buttons are perfect for all that! 15MM (about 5/8 inch) square buttons with...

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  • Ori London

    Carnaby Wallet

    $35.00

    Carnaby is designed to keep your money, cards, and valuables organized. With three sections all tucked away under one main, secure zip. Versatile a...

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