Securely fixed with ISOFIX compatibility. The tether belt system allows for more legroom and is convenient when sliding the seat. Used from newborn to about 2 years and 3 months. Please check the images for the condition, as there are small frays, scratches on the cover, and peeling of the adhesive. Also, although I didn't notice it during use, something seems to be inside the hollow space, and it rattles when tilted. Please refrain from purchasing if this concerns you. Furthermore, please understand that this is a used item by a child before purchasing. Shipping will be packed with bubble wrap. Thank you for your understanding. - Brand: Nihon Ikuji Nosette - Color: Black/White - Installation Type: ISOFIX - Modes: Baby Mode, Child Mode, Junior Mode, 360° Rotation, TOP Tether Belt