Fit Note:  If your Dog between sizes or prefer a looser fit, we highly recommend ordering ONE SIZE UP. Please check your measurements against our size chart before ordering.Specifications
Material: Nylon Mesh Webbing
Battery capacity: 150mAh
Power: Lithium Ion Rechargeable Battery Box 
LED's: Bright LED Lights
Quantity: 1 piece (includes data cable)
Note:
 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.
 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.
 Thank you!