I've been using casual sunglasses for outdoor activities, but I decided to swap to actual sport sunglasses when my casual pair kept moving and sliding on my face. So far, it's like night and day. These actually hug my face, so I don't need to keep adjusting them. I can just focus on what I'm doing instead of being preoccupied on keeping my sunglasses on. The wrap around design and adjustable nose pads are really useful for this.
One thing I don't like is how dark it is. It's like it did it's job too well. It's nothing too bad, but it's not good for low sunglight days, so I'll have to drop a star. 4/5