Four Different Colours and Strengths. Available Strengths: +1.00, +1.25, +1.50, +1.75, +2.00, +2.25, +2.50, +2.75, +3.00, +3.25, +3.50. Twisties are New reading eyeglasses with a Clip that allows you to hang them on a shirt pocket or put them on your Jacket pocket.
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