OP/TECH USA Hood Hat, Medium 4" (Diameter) x 2" (Length) The neoprene Hood Hat slides over the sunshade to protect the lens from dust, moisture and impact. Its tapered cylindrical design makes it easy put on or take off. Features: Protects lens and shade against dust, moisture and impact Cylindrical design for better fit Neoprene stretches for a custom fit on round or elliptical shades Available in eleven sizes to fit a wide variety of lenses Made in the USA from domestic and imported components Fits: Round or elliptical lens shapes Design: Cylindrical design Soft cap Size Compatibility: Lens Fit Range: PK-Micro: 2.5" Ø x 1" L PK-Mini: 3" Ø x 1" L Micro: 2"–2.5" Ø x 1.5" L Mini: 2.5"–3" Ø x 2" L Small: 3"–3.5" Ø x 2" L Medium: 3.5"–4" Ø x 2" L Large: 4"–4.5" Ø x 2" L XL: 4.5"–5" Ø x 3" L XXL: 5"–5.75" Ø x 3" L XXXL: 5.75"–6.5" Ø x 3" L XXXXL: 6.5"–7.25" Ø x 3" L "Ø" is large diameter dimension of lens, hood or sunshade"L" is overall length of Hood Hat Weight: 0.1 lbs Materials: Neoprene Product SKU: 8001122 In The Box: OP/TECH USA Hood Hat, Medium 4" - BlackLimited Lifetime Manufacturer Warranty