Note: This's a stand-alone official strap .. does not come with the Whoop 4.0 fitness device. 

Product Features: 

- Original Whoop strap .. compatible with Whoop 4 wristband. 

- Easy to install. 

- Strap length: 24 centimeters. 

- The side frame is made of high-quality steel. 

- Smooth and comfortable on the wrist. 

- Durable and high-quality. 

- Can be easily washed with water and soap. 

Warranty: One year