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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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Sold outSave 56%Harmony DK
Sale price$8.00 Regular price$18.00
Winqu
Sale price$25.00
Squared Zipper Bag
Sale price$35.00
(5.0)
Large Tote Bag
open shipping box revealing 31 kraft paper envelopes with numbered stickers.

Box of Light 2026

31 surprises to countdown to the new year

Preorder now
Large Zippered Pouch
Sale price$35.00
(5.0)
90 Varas
Sale price$18.00
Moorgate Messenger
Sold outTrafalgar Tote
Sale price$95.00
Curio Chai
Sale price$12.00
Sold outSave 38%Monster Dryer Balls
Sale price$29.00 Regular price$47.00
(5.0)
Carnaby M Wrist Strap Wallet
Neighborhood Fiber Co Organic Studio Worsted
Save 50%Emily Uchytil Note Card
Sale price$3.00 Regular price$6.00
Sold outSave 50%Ultra Alpaca Chunky
Sale price$9.00 Regular price$18.00
Peace Love Yarn Drawstring Bag
Ewetopia Sustainawool
Sold outMaeve Chocolate Bars
Sale price$8.00
(5.0)
Curio Tea
Sale price$22.00
(5.0)
Yarn Crawl Classic Earth Friendly Stripes KIT
Sold outStriped Elements Scarf KIT
Paka Washi
Sale price$18.00
(5.0)
Save 50%DIY Crochet Kit
Sale priceFrom $10.00 Regular price$20.00
Sold outFelted Wool Cat Mat
Sold outSave 65%Sal Agridulce (Cocktail Rim)
Sale price$4.00 Regular price$11.50
Cinnamon Maple Sugar
Sale price$15.00
(5.0)
Natural DyesSave 0%Mitchell DK — 18-Micron Rambouillet, Naturally Dyed
Sale priceFrom $18.00 Regular price$32.00
(4.0)
Natural DyesMitchell Fingering
Sale price$32.00
(4.5)
Mitchell Totes
Sale price$40.00
Sold outScrub Bar
Sale price$17.00
Soap Bar
Sale price$10.00
(5.0)
Ito Kinu
Sale price$24.00
String Theory Glass Water Bottle
Sold outSheep Dishcloth
Sale price$6.00
Carnaby Wallet
Sale price$35.00
(5.0)
Sold outSave 42%Zenú Spice
Sale price$7.00 Regular price$12.00
Ruler and Gauge Set
New ColorsBeartooth High Twist
Sale price$30.00
(5.0)
Euroscrubby
Sale price$5.00
(5.0)
Willesden
Sale priceFrom $76.00
Mota - String Theory Yarn Co
Sale price$19.00
(5.0)
Kandy Spice - String Theory Yarn Co
Sale price$14.00
Saffron Sugar - String Theory Yarn Co
Sale price$18.00
Da Lat Spice - String Theory Yarn Co
Sale price$14.00
Borocera Silk - String Theory Yarn Co
Sale price$30.00
(5.0)
Sold outFinchley Backpack
Sale price$125.00
(5.0)
Sold outSave 29%Clean Cotton in Yarn - Worsted | String Theory Yarn Co
Sale price$5.00 Regular price$7.00
(4.3)
Bantry Sustainable Backpack - String Theory Yarn Co
Sale price$120.00
(5.0)
Paddington B Round Sustainable Crossbody
Kennington Sustainable Sling Bag
Sisal Soap Saver - String Theory Yarn Co
Sale price$7.00