Amzer Hybrid Military Grade Impact Resistant Case for Xiaomi Mi 4i - Retail Packaging - Black Impact Resistant Double Layer military grade case for your Xiaomi Mi 4i. Double layer case with outer polycarbonate layer featuring a rugged grenade molded design. Inner layer combines a glossy and matte TPU increase durability and impact resistance. Durable, shock absorbing design withstanding even the worst drops and bumps. Collapsible stand perfect for video viewing or video chat.