High-quality material: Made of new environmentally friendly and anti-compression ABS material, durable, not easy to age, polished and smooth, allowing the baby to touch it with confidence. The 3M adhesive provides strong adhesion and high load capacity, helping to prevent children from pulling it off Easy to install: Features 3M high-viscosity adhesive that adheres well without damaging furniture. Simply remove the backing from the double-sided adhesive on the door lever lock, place it in the desired position, and press for a few seconds. No drilling required, making installation simple and secure Ergonomic design: The door lever lock is ergonomically shaped and requires simultaneous pressure on both buttons to open, helping to discourage babies from opening doors and keeping children within a safe area Wide application: Suitable for use on balcony doors, windows, security doors, and fits most standard door handles Practical safety solution: Replaces complex locks with an easy-to-use design, helping prevent babies from opening doors or windows when unsupervised, reducing potential risks