glasses of water and various things we've run over with cars. When it comes to demonstrating ruggedness, G-Form is no slouch. After dropping a bowling ball on its iPad case (iPad inside, naturally), the company hit YouTube again to toss a MacBook encased in a new Extreme Sleeve from a 20 foot balcony -- a fall it survived unscathed. These heavy-duty cases are made up of PORON XRD, a flexible material that absorbs 90 percent of impact energy, which the company also uses it to make things like skateboarding knee pads and biking accessories. The laptop case starts shipping on May 31st for $69.95, so heads up when walking under windows this summer. Extreme press release and video of gadget abuse after the break.