Whether left or right ,Both ok! Neck protection Repositions seat belt for a secure, comfortable fit Helps keep belt away from neck and face Crash tested for safety Proven to work for adults as well Safe Fit Seat Belt Adjuster Specifications: Name: Seat Belt Adjuster Item Type: Seat Belts & Padding Item Size: 22*14.5cm cm / 10.61 x 4.32 x 2.95 inches Item Width: 14.5 cm Item Length: 27 cm 8 colors Red, Beige, Blue,Pink. Black, Brown, Purple, Gray Item Width: 21.5cm Item Weight: 0.028kg Material Type: Mesh fabric Seat Belt: Boy and girl seat belt Ages: Fits for 4 years and older Function: Protect the child's safety Feature: More comfortable Use: Easy installation Package Included: 1 x Seat Belt Adjuster 1x Safe Fit Seat Belt Adjuster