Gripz Eyewear Retainer for Larger Frames Black. In fact they've been lab tested to hold the weight of a brick earning the seal of "Brick Tested Tough." For biking fishing rafting or participating in any other vigorous outdoor activity. Specifications for Carson Gripz Glasses Retainer: Manufacturer: Carson Age Group: Adults Gender: Unisex Color: Black Condition: New Quantity: 1 Features of Carson Gripz Glasses Retainer: Large size fits wider frame glasses. Weight: .5 oz Dimensions: 2" x .25" x 11". Package Contents: Carson Gripz Glasses Retainer The Carson Gripz Glasses Retainer is a quality addition to the Carson lineup. For more great deals on Glasses Accessories by Carson please browse our Carson Glasses Accessories page. Gripz Glasses Retainer for Larger FramesBlack ER-30-01