Not really walking kit per se but after a very unfortunate incident with a lot of moisture and a nearly brand new iPhone 6s last year, I've been using a combination of an Otterbox cover and a Ortlieb dry bag to carry my phone in when out on the hills, an arrangement which is highly inconvenient when wanting to take photos etc. So I've just splashed out on a Lifeproof Fre case for the phone for when out walking, hopefully it will give me the access I want to my phone and the freedom to use it without being fearful of ending up with another waterlogged useless phone.