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 help restore the Patagonia Grasslands by encouraging sustainable farming.Every yarn we stock makes a positive impact.
Turn any cup, anywhere, into a sippy cup. Made from 100% european-grade platinum silicone, this sippy lid stretches over a wide variety of cups and glasses. When the silicone lid is stretched over a cup, the suction keeps the lid in place making your new sippy cup virtually spill-resistant. This lid comes with its own travel tin so you can take it with you and reduce your plastic footprint. This silicone sippy lid is bendable and flexible, so it folds up perfectly in the included travel case. When you are done sipping, simply fold up your lid, place it in the case, and on with your day you go.
To clean, simply place your silicone sippy lid in the dishwasher. No dishwasher? No problem. Wash your sippy lid by hand or boil to sterilize. Whether you are out at a restaurant or enjoying a picnic in the park with your family – don’t forget your universal lid. It will meet your needs, no matter where your day takes you.
On behalf of our planet, thank you!
Shipping & Returns
To pick up your order at String Theory, choose GLEN ELLYN PICKUP during checkout.
Most packages are shipped with an $8.95 flat rate.
Ten cent shipping on orders over $100.
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 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.