Compatible Watch Model elastic nylon strap are compatible with Fitbit Versa 4 strap or Fitbit Versa 3 strap or Fitbit Sense strap or Fitbit Sense 2 strap. Adjustable SizeThe sport stretchy versa 4 strap for women men come with adjustable loop buckle, you can easy to adjust the length of the strap freely to fit your wrist. The sense 2 strap for women men is suitable for wrist size 5.5- 9.8(140mm-250mm). Comfortable and Premium MaterialThe adjustable versa 3 strap or sense strap are made of lightweight, soft, breathable, durable and premium elastic nylon, comfortable to wear and skin-friendly to your wrist. Upgraded Versa 4 Connectors We use upgraded connectors to ensure that the elastic straps is securely connected to the versa 4 or sense 2 or sense or versa 3. No tools are required. Multi Fashion ColorsWe provide a nice variety of combinations compatible with fitbit versa 4 bands or fitbit versa 3 bands or fitbit sense bands or fitbit sense 2 bands, change your watch strap to match the clothes in daily life. The products can enjoy 12 months warranty after sale service.