







Bantry Sustainable Backpack
These are the most popular bags at String Theory! They are the perfect size for carrying everything you need all around town. I've carried mine daily for almost a year and it looks brand new. Just the other day, I spilled a travel mug of coffee in it. I washed it out and you would never know.
Each Bantry has four straps for being carried on your back or by your side, with a front pocket closed by a sturdy zip, a secure inside pocket, as well as a laptop or tablet sleeve inside.
Made using the rPET sustainable Nylon, the bag has a smooth and glossy feel. It is then coated to make it water-resistant and finally put through a softening process to make it have a softer feel. And our nylon material is weather-resistant, lightweight, and as durable as all our ORI bags!
Medium
The Bantry B Medium option is the best thing to have your back. With a padded compartment for your laptop or tablet and enough space for a water bottle, a knitting project and more.
Each medium bag is 15.7in x 11.8in x 4.7in. The capacity is 14.39 litres (but we don't recommend that you fill it with water. 😆)
Impact
The Bantry bags are made from pre-consumer fabric waste such as scraps, rejects, offcuts and trimmings. They take this waste that would otherwise be thrown out and spin it into new material.
The maker of these bags is a certified B Corp. To get this accreditation they had to meet rigorous social and environmental standards which represent its commitment to goals outside of shareholder profit.
SHIPPING
We are committed to shipping your order as quickly as possible via UPS or USPS. You can expect to receive your items within 5 - 10 days. If you have placed a PREORDER, please check the product description for delivery dates.
To pick up your order at String Theory, choose PICKUP IN STORE during checkout. Orders not picked up within 90 days will be considered legally abandoned and payment will be forfeited.
Domestic packages are shipped with an $8.95 flat rate. For orders over $100, the rate will be 10 cents(a little crazy, but true!)
We are no longer able to ship internationally.
Digital patterns will be delivered immediately for free via email with a link to download your purchase.
RETURNS
Unused items in their original condition and packaging can be returned for store credit within 6 months of purchase.
No returns or exchanges are available for sale items, trunk show purchases, shipping charges, preorders, or jewelry.
Thanks for your understanding.
If String Theory cancels the class for any reason, we will refund your registration fee. If you are able to cancel at least one week prior to your scheduled class, you will receive a store credit for your registration fee. If you cancel less than a week prior to the class, you will receive store credit only if we are able to fill your spot. Unfortunately, we are unable to provide class make-ups.
String Theory Fan Club Cancellation Policy
Annual members can cancel anytime within the first 30 days for a refund, minus a $25 cancellation fee. After 30 days there are no refunds on annual plans. Monthly subscribers can cancel at any time.








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By purchasing yarn from String Theory, you’re lifting up a number of small and female-owned businesses.
We help women in Rwanda, who survived the genocide, educate a new generation. We help women in Uruguay find meaningful work without leaving their rural homes. We help a family in New Hampshire maintain a mill, a tradition spanning hundreds of years. We support sustainable farming in Michigan.


