The SpiderPro Hand Strap fixes several design problems to give you a more secure grip and a better fit.

Spider Holster wants to give you a better grip on your digital SLR.

If you’ve ever used a hand strap, you may have noticed that it has a tendency to get in the way. Whether it’s when you’re trying to swap batteries or memory cards or when you pick up the camera for a quick shot without slipping your hand in.

Spider Holster, maker of Spider Camera Holsters and accessories, decided this was no way to live and redesigned the common hand strap to eliminate these pain points while making a universal, comfortable and secure strap.
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https://www.cnet.com/news/camera-accessory-maker-spider-rethinks-the-common-hand-strap/