Robert Lindsenwrote a review of Mammut Multipitch Chalk Bag on August 28, 2018
Familiarity: I've used it several times
The chalk bag is great! I recently broke my phone in a fall when it was in my thigh pocket, and what something that would allow me to bring my phone up on multipitch routes while still keeping it safe. So far, this chalk bag fits the bill perfectly! It fits my Galaxy S9 with room to spare, I could easily still fit some small snack, or keys and a wallet in there. The elastic cord on the bottom seems like it would be great for a light jacket or a soft water bottle, and the other side pockets seem really useful as well. And yes, the main pocket does fit a 12oz can of beer!
If you're complaining that your iPhone Plus, or iPad, or laptop, or desktop computer doesn't fit it this thing.... just don't. If your phone doesn't fit in this thing, you need a smaller phone or a backpack, not a bigger chalk bag...