20mm x 6mm (approx). Glasses Connector's.
Off-White Sunglasses Black/White Unisex Virgil Arthur Sunglass MOST POPULAR XX 
OFF-WHITE ARTHUR SUNGLASSES BLACK&WHITE UNISEX SUNGLASS
Soft Glasses Ear Cushion 2 Pairs Silicone for Glasses Black White, Black
Mambi Whizz Junior Ski Goggles Black frame with black/white stripe elastic.
Boolavard Clear Black Lens Classic Sunglasses - Style Unisex Shades UV400 Protective Mens Ladies (Cat Eye - Black White-Dots)
