Featuring protected ports that prevent water and dust from entering device, rugged cases for Microsoft® Surface™ 3 and Surface™ Pro 4 are impact-resistant and pass MIL-STD-810G testing (26 drops from 4 ft). Construction is of enterprise-grade plastic, and rubber bumpers occupying each corner provide additional shock absorption. Along with back hand strap, briefcase handle, and shoulder strap for mobility, features include easel with hinge for any-angle viewing and secure, magnetic closure.