Link: http://technogog.com/review/review-of-actionproof-the-bumper-case-for-apple-watch/
Quote:
"THE BUMPER is one such accessory from the folks at Actionproof. It functions as a shock absorber for the Apple Watch as well as abrasions and other forms of trauma. Since Apple uses Gorilla Glass on the Apple Watch Sport rather than sapphire crystal this makes that version more susceptible to scratches. As an owner of the Sport version I jumped at the opportunity to review this accessory. "