High speeds and high altitudes come with inherent risks, and even small errors can have big consequences. Earth's atmosphere is generally not considered survivable for significant amounts of time above altitudes of 50,000 feet without a spacesuit, and Bezos will be traveling up to 350,000 feet. But the capsule he travels in will be pressurized, so he doesn't need a special suit to keep him safe, and he'll have access to an oxygen mask if the cabin loses pressure. The spacecraft is also equipped with an abort system designed to jettison the New Shepard capsule and passengers away from the rocket in case of emergency. There's also back-up safety features to help the capsule land gently even if a couple of its parachutes fail to deploy.
