The phrase "sky divers" refers to people who participate in the sport of jumping out of aircraft and free-falling through the sky before deploying a parachute to land safely. Full definition
In fact, as long as you stick to sport diving parameters, you can get life insurance (unlike sky divers, for example). (dotearth.blogs.nytimes.com)
The modern training and equipment have enabled sky divers to enjoy this sport with a much less chance of enduring a fatal accident or injury. (bestchoicelifeinsurance.com)