It is a little bit fiddly but I have two for two of my bikes. I use the Thork GPS which needs to link to my phone as a mobile hotspot for full functionality. My phone lives in the pouch along with a Leatherman, goggle cleaner, polos for horses we meet, zip straps, T30 Torx to get the seat off, and if travelling, my passport. Easy to fit. My handlebars have got a bit crowded with this one my FE350 (but I have put Double Take mirrors and the thumb control for the Thork, and a rear Rekluse brake so not surprising it's a bit crowded) but perfect on my 701. A really useful bit of kit.