Create the Perfect Travel System Easily connect your Britax infant car seat with your BOB Gear single jogging stroller Whats in the Box Adapter frame and 2 removable receivers removable receivers needed for AlterrainAlterrain Pro only Compatible Britax Infant Car Seats BSafe Gen2 BSafe Gen2 FlexFit BSafe Gen2 FlexFit BSafe 35 BSafe 35 Elite BSafe Ultra Endeavours Compatible BOB Gear Single Jogging Strollers Alterrain Alterrain Pro Blaze Rambler Revolution Flex 20162030 Revolution Pro 2016 Stroller Strides 2016