When you want to express your commitment to that special someone and your gains, its 3...2...1 GO! For the QALO Thin Line Ring for Men and its comfort, durability and style. These special rings feature premium silicone material that will withstand the wear of tough workouts, whether its a heavy lifting day or a WOD with rope climbs or pull-ups. Beyond durability and function, these rings also look good so they can easily be worn from the gym or studio to the boardroom. The Thin Line Rings honor fallen heroes with their support of the National Fallen Firefighters Foundation® and the National Law Enforcement Officers Memorial Fund. Non-conductive. Non-porous. Dimensions: Mens .87cm wide, .15cm thick Womens .55cm wide, .15cm thick. Sizing: If you have a ring to size, please measure the diameter and circumference of your ring and follow the measurements below to find your QALO size. If you are between sizes, we recommend that you take the next whole size up. (i.e. If you are a size 8.5, we recommend that you wear a size 9.).