Replacing the need for a regular shaped reflector the TriGrip reflectors utilise a triangular design which provides a much stronger and more stable structure. They also feature a moulded handle with securing strap, allowing accurate positioning with one hand. This means light can be reflected into awkward spots that would've previously required a stand system.
The securing strap also allows you to support the reflector without actually gripping the handle, reducing pressure on your wrist and fingers when held for a long time.