Lalizas Dry Bags off er protection for all your handheld electronic equipment - GPS, VHF, mobile phone Etc. Made of durable vinyl, they have a clear front panel which allows you to see displays and buttons so you can access many functions on the handhelds without removing it from the bag. Each dry bag has a lanyard loop and is secured by a velcro patch. The sizes shown below are the useable size - after it has been secured - when the bag is empty.