The EFM Alta Case Armour with D3O Crystalex range boasts superior clarity purity and simplistic beauty synonymous with the Scandinavian wonderland. Featuring D3O Crystalex throughout the inner case to give your device military-grade impact protection from the daily knocks and drops; so you can enjoy your device for longer.lt Now integrated with a PC backplate with 60 percent recycled content and antimicrobial additive that kills up to 99.99 percent of bacteria and prevents further growth and reproduction during the life of the case. lt bright the EFM Alta Case Armour with D3O Crystalex is just 2.2mm thin; drop-tested to 3.4 meters and comes in a variety of clear; trendy and meaningful designs; making this EFMs slimmest; a simplest and cleanest range that keeps you; your device and the planet protected.