SWANS Swans Clip-on Sunglasses SCP-2 Polarized Brown Purchased and only tried on indoors, then stored. I'm selling it because I don't think I'll use it. This type attaches to your glasses, but it's not suitable for thick-framed glasses like those with cellulose acetate frames. I think it's better suited for metal frames or rimless glasses. Instant purchase is welcome/preferred. I'm sorry, but I do not accept price negotiations. Thank you. If there are any defects, please let me know "before" you rate the product.