EFM Cayman Case Armour with D3O Signal Plus - For Samsung Galaxy S21 5G - Black/Space GreyThis case is so slim, clean, tough, light, and 5G-optimized it could be a super hero! The patented D3O with Signal Plus Technology is the only material to meet the current industry 5G permittivity standard and is proven to limit 5G signal loss by 37 percent compared to any other case material in the market. Plus, it has extra special powers like crystal clear audio and video, faster download speeds, longer battery life, and best-in-class impact protection. Plus, its antimicrobial properties are off the charts and will blast 99.99 percent of bacteria into oblivion!