KAUAI - Silicone Wedding Rings Elegance Timeless Collection. Leading Brand, from The Latest Artist Design Innovations to Leading Edge Comfort ELEGANT: Celebrate Your Marriage with Beautiful Rings that You Don't Have to Remove to Enjoy Life LIFETIME WARRANTY: Replace Any Ring for Any Reason with Our Simple No Questions Asked Lifetime Replacement Policy. TOP RATED 5 OUT OF 5 STARS***** SAFE SILICONE: Each Unisex Band is Crafted from Hypoallergenic, Heat Resistant, 100% Medical Grade Silicone COMFORT FIT: Premium Silicone Features a Soft, Smooth Comfy Fit for Every Proposal, Anniversary and Outdoor Activity DURABLE: Thick Build Handles up to 400 Degrees and Tough Weather Keeping its Original Shape and Size. Kauai Rings allow you to honor your marriage and union no matter what the conditions or activity. Available in over 30 colors &amp; 2 styles; each Kauai Ring features a brushed matte finish, giving the illusion of metal. <span class="a-text-italic"><span class="a-text-bold">Pro-Athletic Series</span>: </span>Professional Althletic Ring, the Famous Ring that started it all. <span class="a-text-italic"><span class="a-text-bold">Kauai Timeless Collection</span>: </span>Featherweight Comfort Technology lightly hugs your finger to feel like youre wearing nothing at all, while still maintaining it&#039;s strength. Designed by World Renowned Silicone Artist &amp; Sculptor Donna Lee Originals. Built to withstand any working condition, mountain climbing, exercising at the gym, serving in the armed forces, or embarking on your next adventure. Wear while weightlifting at the gym, hiking and camping, working with your hands, on duty in law enforcement, or caring for your patients at the hospital. Kauai uses only pure medical grade quality silicone. This ensures optimum comfort with a soft, smooth, and pliable fit with no hard edges. Its also hypoallergenic, non conductive, and non porous so youre safe, secure, and able to conveniently wear and wash without issue throughout your work day or excursion. <span class="a-text-bold">Size 4</span>= 15.3mm diameter    <span class="a-text-bold">Size 5</span>=15.7mm <span class="a-text-bold">Size 6</span>=16.5mmdiameter     <span class="a-text-bold">Size 7</span>=17.3mm <span class="a-text-bold">Size 8</span>=18.2mm diameter    <span class="a-text-bold">Size 9</span>=18.9mm <span class="a-text-bold">Size 10</span>=19.8mmdiameter    <span class="a-text-bold">Size 11</span>=20.6mm <span class="a-text-bold">Size 12</span>=21.3mmdiameter    <span class="a-text-bold">Size13</span>=22.2mm Kauai Rings are safe to wear around machinery, can be worn with gloves, and wont easily slip off. The proprietary silicone blend withstands the toughest weather conditions without cracking or drying out. Can stretch10 times itselfbefore breaking away at 43 pounds of pressure for safety. Heat resistance is rated up to 400 degrees without melting or distorting shape. Dirt, oil, and paint wash off with ease Soft, Smooth &amp;Pliable With No Hard Edges. So Comfortable that you will forget you&#039;re wearing it. Wearwhile weightlifting at the gym, hiking and camping, working with your hands, serving in the military, or on duty in law enforcement.