This is especially useful when using the lens for video with a matte box

This added flexibility and versatility helps make the RF600mm F4 L IS USM an amazing option for wildlife photography and more

disruptive lights while sleeping with LED lights that automatically dim after a few moments of inactivity

for dynamic power in every detail of your music and movies

Product dimensions: approx 6

Vivitar Action Camera Head Mount For GoPro & Other Action Cameras Lens Caps This is especially useful whenThe Vivitar Pro Series Head Strap Mount keeps your action camera or GoPro camera mounted to your head without a helmet. Keeps your hands free and allows you to stay focused when climbing, swimming, performing search and rescue operations or any other activity where a helmet isn't needed or required.