The 2017 model of the Austlen Entourage is a high-end, convertible stroller designed to handle large amounts of cargo and multiple children, often cited for its ability to transition from a single to a double stroller with a "sit and stand" option. 

Expansion System: The frame extends to create space for extra cargo or a second seat, with the ability to fit in the trunk of a small SUV.

Weight Capacity: Designed to hold up to 150 lbs of combined children and cargo.

Configurations: Compatible with a second seat and a "Sit+Stand" jump seat for older children.

Car Seat Compatibility: Compatible with many major car seat brands (Maxi-Cosi, Cybex, Nuna, Uppababy, Chicco, Britax, Peg Perego, Graco) via optional adapters.

I'm also selling Accessories for this stroller separately on eBay: large market tote & car seat connector