EPYSN Replacement Bands Compatible for Fitbit Alta and Fitbit Alta HR,Adjustable Sport Band with Watch Buckle Fitness Wristbands for Women Men Adjustable Sizes Design: for 5.5" - 8.3" Wrist,fits Small and Large Both Secure Design:Watch-type band fastener is much more secure than original alta bands,prevent your fitbit tracker fall off Premium Materials:Made of soft smooth silicone and stainless steel buckle,sturdy,durable flexible,and very comfortable to wear Convenient to Use:Compared to original alta bands,the watchband-style is easier to put on and take off due to the more traditional buckle Compatibility:EPYSN band perfectly compatible with fitbit alta HR 2017 and fitbit alta 2016,variety of colors fit with your daily wear and mood,tracker not included