KNOT THOERY Hello and Welcome! Knot Theory was founded in the beautiful Vancouver, Canada. We are one of the OGs of silicone rings, and have pioneered many silicone ring innovations, including being the first to design women's silicone rings, metallic silicone rings, comfort fit breathable rings, and 360o engraving on both inside & outside of the ring. We love designing highly functional and good-looking silicone rings. We also love our customers from over 40 countries. You rock our world <3 Visit us at knotheory.com for more. WHAT MAKES US DIFFERENT OUR RINGS: ★ Comfortable 24/7 - Enhanced breathability and comfort with a curved inner wall ★ Looks Great on Your Hand - Thoughtful designs; no finger muffin-tops thanks to the ergonomic design ★ Durable - Best-of-both-worlds thickness & f