We have engineered the SPIbelt Dual Pocket PRO for comfort and maximizing carrying storage capacity. This belt has two pockets, thesmaller pocket size, which expands to 6.5x3x2", and the larger pocket, which expands to 8x4x2". The Large Pocket easily accommodates large smartphones, including the iPhone 13 Pro Max and Samsung Galaxy S20 . The pockets are arranged closer together for a better fit, and we’ve also increased the width of the elastic band for stability and comfort.