Portable Mini Power Bank for iPhone and Android Phones – Power Bank – Aluminum Material – Ultra-Compact Power Bank. Fashionable & Ultra Slim Design: The portable power bank surface uses wire drawing processing. It looks fashionable. The material of this mini power bank is high-quality, non-slip, anti-scratch, ultra-comfortable, and enhances grip. Its slim and lighter weight features are perfect for your business trip or other outdoor/indoor activities. Powers any intelligent and cell phones for two times. This compact portable mini power bank is an excellent fit for travel when you need a portable power bank on the road, in the field, or off the grid. According to an IATA (International Air Transport Association) document, this portable power bank is more minor than 100Wh. Therefore, it can be carried on the flight without approval.