There pretty sturdy and light ! Not bad at all a sure fit for safety and piece of mind

As a somewhat nervous first time drone pilot, this seemed like an accessory that I might really benefit from. I have since decided I don't need these and they add complexity to what I do with my drone that I simply don't need or want. They snap onto the drone and protect the propellers from hitting things. The other way to protect the propellers is to avoid flying the drone into things. I haven't flown much in windy conditions and may change my mind if that turns out to be a problem, but I am not using these guards at this point. I suppose if you are flying in areas with lots of obstacles or indoors, these might be more critical. Clipping the guards onto the drone is straight forward. It is a little bit awkward getting the guard in place and fastening the clip the first time, but not too difficult. The clips snap into locked position and sometimes you have to squeeze really hard to get them to latch, but again, it is doable. One problem I have is that you cannot fold the drone up and pack it away with the guards on. You have to take them on and off every time you are going to fold up or unfold the drone arms. Folded up, the drone is then quite compact and easily ported in a small case, but the guards are large awkward fragile plastic pieces and still have to be transported. I find it easier just to not use them.

Perfect fit, very effective at keeping my drone safe from collisions

The guards protect the propeller properly and snug. Keep me from hitting a few branches. It is sturdy and takes light impact.

it is good for indoor environment, but it would be impact endurance.