Powertrue Armband for Iphone 6 Plus (5.5") with Medium to Large Cases (It Also Fits Otterbox Defender for Iphone 6 Plus), Armband for Samsung Galaxy S5 HTC One M9 Designed to fit an iPhone 6 Plus (5.5") with medium to large cases (fits OtterBox Defender for iPhone 6 Plus) Super comfortable neoprene armband stays secure without slipping or constricting! Controls earphone cord! (the flap with reflective logo keeps the cord length managed when working out and stores it too); Protective window cover allows full touch screen control; Excellent quality in construction and materials; Durable protection; Washable Armband strap adjusts from 9-16". For larger arm sizes or to fit over clothing an Armband Extender is available to add about 6.5" (see model EX3 - sold separately) Compatible iPhone 6 Plus cases: Incipio Dual Pro or Dual Pro Shine case, iBlason Armor Box case and the Supcase Unicorn Beetle Hybrid Full Body Rugged case