Microsoft Lumia 950 Case, Shocksock Microsoft Lumia 950 Armband for Sports Gym Bike Cycle Jogging with Adjustable Elastic - Black & Blue for Microsoft Lumia 950, fits arm of 26cm/10.3 inches and above Optimal sports flexibility Microsoft Lumia 950 case armband Machine washable Elastic strap allows arm sizes from 26cm/10 inches and above Reflective material for night time use Colour: Black / Blue