Electric bike owners, this passenger backrest is a game-changer for carrying riders comfortably and safely! The ergonomic design measures 19cm in length and 10.2cm in width, with a 4mm thick steel plate that provides solid support without being overly bulky. The construction combines steel plate, comfortable sponge padding, and durable PU leather covering - so it's both sturdy and pleasant to lean against. What's great is how simple the installation is - just a few screws and nuts included, and you're done in minutes. The baking paint process gives it a finished look that matches most electric bike styles. I've installed this on my bike for carrying my daughter, and the difference in her comfort and confidence is noticeable. The metal bracket ensures it stays securely in place even on bumpy rides. The padding is sufficient to make longer rides comfortable without adding unnecessary bulk. Seriously, if you regularly carry passengers on your electric bike, this backrest makes the experience so much better for both rider and passenger. It gives that extra sense of security that makes hesitant passengers more comfortable, and the ergonomic shape supports the lower back perfectly. The quality feels substantial - this isn't some flimsy accessory that will break after a few uses. It's compatible with many electric bike models, though you'll want to check your specific setup. The simple design means it's easy to clean and maintain too. Whether you're carrying kids to school, giving friends rides around the neighborhood, or using your bike for shared transportation, this backrest adds that extra comfort and safety that makes passenger carrying much more practical. Definitely worth the small investment for the improved experience!