The Mountain Buggy Duet V4 Universal Car Seat Adapter allows you to convert your buggy into a flexible travel system, enabling quick and easy transitions from car to buggy without disturbing your resting baby. Designed to support multiple leading infant car seat brands, it offers convenience and versatility for everyday travel with one child or twins. Features: Compatible with Mountain Buggy Duet V4 stroller Converts your buggy into a travel system Easy attachment directly to the buggy frame Safety tested and certified to global standards (UK, EU, AU, NZ) Suitable for siblings and twins One adaptor required per infant car seat; two adaptors required for twins Compatible with the following infant car seats: Mountain Buggy® protect™ infant car seat, phil&teds® alpha™, Cybex Aton, Chicco KeyFit 30, Safe n Sound, Graco SnugRide 35, Britax B-Pod, Britax Willow, Nuna Pipa, Kiddy Evolution Pro 2 Weight limit: 13 kg / 28 lbs Dimensions: Product dimension: 40.5 x 37.5 x 9.5 CM Weight: 1.9kg