Review on Stay Hydrated and Visible While Running with 247 Viz Hydration Running Belt - Includes 4 BPA Free Water Bottles and Fits iPhone 8, X and Similar Sized Phones! by Jeff Henkhaus

I like that 40 oz liquid fits in the belt. This is the best I've found and very desirable for running 16 miles or more, especially on warm days. I wish the pocket was bigger for a 6.5 inch phone but that might make the strap too heavy. If I need to take my phone with me, I use an armband and maybe I need running tights with lots of pockets for all the things I take to the marathon.