The Mountain Buggy Duet V4 Car Seat Adapter lets you convert your buggy into a flexible travel system, making transitions from car to buggy quick and effortless. With simple click-on installation, it allows you to move your baby without disturbance—ideal for everyday travel with siblings 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 (v5, v4, v3), phil&teds® alpha™, Britax B-Pod, Britax Willow, Maxi-Cosi CabrioFix, Pebble, Mico, Mico AP, Nuna Pipa, Kiddy Evolution Pro 2 Dimensions: Product dimension: 39.5 x 16.5 x 8 CM Weight: 1.2kg