String Theory Yarn Co

String Theory Yarn Co Independent yarn shop in Glen Ellyn, Chicago suburbs — and online. Knitting & crochet classes too. Every stitch connects.

Natural-fiber yarn from women-led cooperatives, Black-owned studios, and indie dyers in organic and fair trade fiber. String Theory is a feel good yarn shop in the western suburbs of Chicago. At String Theory we feature yarn from companies that are environmentally friendly and socially responsible: Manos del Uruguay, Blue Sky Alpaca, Woolfolk, Handspun Hope, Appalachian Baby Cotton and more. We lo

ve color, so at any time you might find Malabrigo, Madelinetosh, Knitted Wit, Dream in Color, and our exclusive Migration Yarn - but they arrive when they want to and disappear quickly.

09/05/2026

After Hours with Beth - Sat., Sept. 5, 2026
Flash Sale through Monday 9/7!
Melbourne Mojave for Limonata crochet top - in lemon or lime (Danedlion or Pickle)!

09/05/2026

After Hours
Labor Day Flash Sale announcement

09/03/2026

New book for scrap yarn lovers, some interesting new DPNs from Addi, and a colorful fi*****ng weight yarn that’s great for socks.

08/29/2026

After Hours with Beth - Sat., August 29, 2026
New Atenti project totes and other styles - including some beautiful embroidered designs.
You’ll want to see ALL of our bags - online or in store!

08/29/2026

After Hours
I’m making Yoshio with Plied leftovers. My goal is to finish before Ann Weaver comes to teach us how to make Scrappy Projects Spectacular

08/27/2026

New Eric and Christopher totes in three sizes and lots of fun designs. Ready for your fall adventures!

08/01/2026

After Hours with Beth - August 1, 2026
Chicago Yarn Crawl ends tomorrow.
Make sure you have all the materials you need to keep knitting and crocheting while we’re on vacation! (Just in case, we’ll be shipping once per week during our vacation.)

If you need a project, take a look at our Wool & Wilderness boxes - there are only a couple left. The Explorer Knits DK inside is gorgeous and it includes pattern suggestions!

Or check out our new colors of kits for Janet’s Guaranteed Passage Kerchief, and of course consider a new dumpling bags from Binkwaffle for your new project!

We’ll be open 12-4 on Sunday!

08/01/2026

After Hours: Assigned Pooling
Patterns: Roam, Out of Line, Pool Party

07/30/2026

Three fun things: James Watt is coming to visit in early September- sign up on the website now. Got one or two skeins of yarn waiting to be something? We’ve got a great accessories pattern book to inspire you. Finally, a new style of stitch maker that allows you to write your own pattern reminders.

07/29/2026

Stop by or shop online.
Chicagoland Yarn Crawl ends on Sunday, August 2.

Address

477 N Main Street
Glen Ellyn, IL
60137

Opening Hours

Tuesday 10am - 5pm
Wednesday 10am - 5pm
Thursday 10am - 5pm
Friday 10am - 5pm
Saturday 10am - 5pm

Telephone

+16304696085

Website

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