From Inglesina, this car seat adapter features: Consists of 2 hooks, easy to attach to the Quid³ stroller (sold separately) Easy to attach, it snaps directly onto the stroller's frame, allowing you to pop on a compatible car seat of your choice with ease No need to remove the adapter to fold the stroller The Quid³ Car Seat Adapter allows you to attach selected Nuna®, Maxi-Cosi®, Cybex® and Clek® infant car seats onto the Quid³ stroller frame (sold separately): Nuna® (Pipa Aire, Pipa Aire Rx, Pipa Urbn), Maxi-Cosi® (Peri 180, Mico Luxe, Mico Luxe +), Cybex® (Cloud G, Cloud G Lux, Cloud T, Cloud Q, Aton G, Aton G Swivel), Clek® (Liing, Liingo) As all Inglesina products, the Quid³ Car Seat Adapter is free of harmful chemicals, such as regulated BPA, PFAs, lead, flame retardants, phthalates and others. Dimensions: 6.5" L x 2" W x 9" H Imported.