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1.remove legs or strap from frame 2.hold frame face down firmly in hand pull foam towards you until you hear it unclick from nose bridge, turn round frame and repeat on other side to refit foam line up round around nosebridge and press in until it clicks in To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.







