Note: This's a strap only .. does not include the Whoop 4.0 fitness device. 

Product Features:

- High-quality .. elegant strap from 974Bands .. compatible with the Whoop 4.0 fitness device.

- Made of soft and elegant wool. 

- Easy to install.

- Soft and comfortable on the wrist.

- Side frame made from high-quality steel.

Warranty: 1 year