SPECSetter is a small silicone piece that easily adjusts the arm of your glasses, leveling them out so they sit perfectly on your face. 

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1. Position The Fin: Gently slide the SPECSetter piece onto the arm of your glasses, guiding the eyewear arm through both openings. Ensure the distinct "fin" of the piece faces toward the back of your ear/glasses. 

 2. Achieve Perfect Balance: While wearing your glasses, slide the SPECSetter piece forward or backward along the arm. Stop when the eyewear is resting perfectly level and feels even on your face. 

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3. Pro Tip for Precision: For the best results, perform the adjustment while looking in a mirror. A clear reflection allows you to easily verify that your glasses are sitting perfectly straight.