Describe 1. High-quality PC plastic, gorgeous, wear-resistant and sturdy, designed with a closure buckle, making it easy for you to adjust the length of the seat belt. 2. Designed to accommodate all bracket seat supply widths, the most suitable safety belt width is 53mm for your, return, charn, etc. 3. The shoulders, neck and face are sometimes too tight, comfortable and safe seat belts. The seat belt tension adjuster easily clamps it to the strap for extra slack for driving comfort. 4. Install the sleeve installation, pull the strap out to provide the desired amount of slack, then slide the adjuster onto the strap and then to the top. Then, simply slide the tab to the locked position to hold the adjuster in place. 5. Good design. By adjusting the back buckle on the back of this problem, the seat can be controlled. parameter: Size: 73 * 20mm, Suitable safety belt width: 53mm Package includes: 1* seat belt limiter + 1* aromatherapy tablet