Now that winter is coming on, keep your lens warm with a LensCoat Lens Cover. Made of closed-cell neoprene and a camouflage design to hide from critters, they come in a variety of styles and sizes. Each cover is waterproof and has a clear UV-PVC window over the controls and distance-scale window. Our fave has to be the Hoody, priced from $12.99 to $24.99. LensCoat also makes them for tripods and will customize covers for your equipment.