Feature A All-Weather Protection Against Dust, Dirt and Surface Scratches A Quick Slip-On Design Ensures Fast and Consistent Removal Every Time A Available In Black and Orange, Medium Fits 300-360mm, Large Fits 390-450mm Specification Specification Details Material: 2.5mm Neoprene Color: Black Overall Length: 320 mm / 12.60 in Diameter: 70 mm / 2.76 in Opening Length: 250 mm / 9.84 in Weight: 59 g / 2.08 oz