Knot Theory was born in Vancouver, surrounded by beautiful mountains, waters, and active people who love making the most of each day. Since day 1, we've been obsessed to give you the most comfortable and sophisticated silicone ring. In our Stacklet collection, you'll find gorgeous stackable thin silicone rings in the largest selection of colours. They are great as birthstone rings, cause and awareness rings, friendship rings, mother and daughter rings. They are also amazing as ring stoppers for your diamond wedding ring to guard your ring from falling off. Discover the largest selection of silicone band colors at Knot Theory, including these birthstone colours: January – Garnet Red February - Amethyst Purple March – Aquamarine April- Diamond (Silver) May- Emerald Green June - Pearl White July - Ruby Red August - Peridot Green September - Sapphire Blue October - Tourmaline Pink November - Citrine Topaz Yellow December - Turquoise Sizing: Use the ring sizer included with your ring for the most accurate measure. --- Why silicone rings? Prevents ring avulsion & degloving: the ring will break under tension Travel-safe: leave your expensive and irreplaceable ring at home No-pinch, no-callus: for gym workout, and all hands-on activities Expands with your fingers: for swollen finger situations including temperature changes, pregnancy Ultra comfortable: we have not worn a more comfortable ring than our silicone rings. Does not conduct electricity: electricians, mechanics Does not heat up: firefighters, chefs Hygienic and does not rip latex gloves: doctors, nurses, paramedics, front line health workers Perfect anniversary gift for her, as well as birthday, Mother's Day, and Valentine's Day present!