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 Arc collection, you'll find gorgeous breathable domed silicone rings in the largest selection of colours. They are great as matching couples wedding rings, rings, 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 colors: January – Garnet Red February - Amethyst Purple March – Aquamarine April- Diamond (Silver) May- Emerald Green June - Pearl White & Alexandrite 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 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 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 set for husband, wife, partner, best friend, groom, bride, fiance, as well as couples engagement wedding shower gift, birthday, Mother's Day, Father's Day, and Valentine's Day present!