Universal waterproof case dry bag fits all smartphones up to 5.5" diagonal size (Certain big screen phones need to remove the protective case)
Waterproof case dry bag for beach, fishing, swimming, boating, kayaking, snorkeling and water park activities
With a slot for strap make this to armband,for arm strap size,300mm.
Compatible with devices up to 100mm x 170mm (clear window 80mm X 140mm); Clear Window on front side, perfect for taking pictures, videos and checking emails.
Comes with a neck strap for convenient carrying.Features a simple snap and lock access, easy to keep out water, snow, dust, sand, and dirt.
********NOTE:Please test with a paper before put your phone in
Universal Waterproof Case Kmall Cellphone Dry Bag Pouch Armband For iPhone 6S 6 6S Plus iPhone 5C 5S Samsung Galaxy S7 S7 Edge S6 S6 Edge HTC LG Sony Nokia Motorola [UP to 5.5" Diagonal] (Clear) - B01I4YXASC