Do you shoot in the rain or in heavy snow? If so, you can protect your camera and lens with the Emergency Rain Cover from Think Tank. This cover features a Durable Water Repellent (DWR) coating and sealed seams for added protection against rain, sleet, snow, sand, and dust. Fold it down to fit into the included compact carrying pouch and keep it in your camera bag, so you're prepared to deploy it quickly in a downpour or sand storm.
This cover has a non-slip, adjustable strap that cinches to the lens hood, so it stays put once in place. It can be used while shooting atop a tripod or monopod, has an oversized window for viewing your LCD and controls, and the hot shoe mount keeps it securely on your camera when in use. It has a cinch-able sleeve through which you access your camera and dual viewing configurations for varying conditions.
I consider the Emergency Rain Cover to be an essential piece of gear when photographing during the monsoon season.