Available to buy here:
Welcome back to Baby to Child. Today we’re taking a close look at the Baby Jogger Second Seat Kit for the City Select LUX Stroller in Slate. If you’re trying to plan for a growing family, juggle two little ones, or just want a stroller setup that actually keeps up with your day-to-day, stick around—and don’t forget to hit subscribe and tap that bell so you don’t miss gear reviews that help you save money, avoid unsafe buys, and actually get gear that fits your life.
This second seat kit is designed to convert your existing City Select LUX into a double stroller, so you can carry two children at once without buying a whole new system. The seat itself accommodates a child up to 45 pounds, and it comes with a full 5-point harness for secure rides. It’s also designed to fold down compactly—60% smaller than the standard City Select seat—which matters if you’re thinking about tight car trunks, public transit, or hallway storage. The polyester seat comes with an extended UV 50+ canopy with a peekaboo window, a multi-position reclining seat, and a rotating calf support. There’s also an integrated seatback pocket for snacks, wipes, or small toys, and mounting brackets are included so you can attach it to your stroller frame without extra parts.
In terms of growth and fit, this second seat works for toddlers and preschool-aged children up to 45 pounds. If your older child is nearing that weight, it’s still a good choice because the multi-position recline and rotating calf support make it comfortable for longer rides. For younger toddlers, the harness keeps them secure, and the compact folded size means you can still navigate crowded sidewalks or indoor spaces without feeling like you’re pushing a tank.
In everyday use, you can expect the setup to be fairly straightforward if you already know your City Select LUX frame. Attaching the seat with the included brackets takes a few minutes, and once it’s on, adjusting the recline or rotating the calf support is intuitive. The integrated pocket is handy for quick access items, though for bigger snacks or full diaper bags you’ll still rely on your main stroller storage. Folding the stroller with the second seat attached is easier than some other doubles, but it does add weight, so plan to lift with both hands if you’re putting it in the car.
Safety-wise, the 5-point harness is your primary safeguard. Make sure it’s snug and that the straps aren’t twisted. The canopy does a good job of sun protection, but you’ll still want to keep babies under direct sun exposure minimal. Because it’s a secondary seat, check that both seats are correctly mounted each time—misaligned brackets are a common mistake with add-on seats. And, as always, supervision is key whenever kids are in motion.
This seat is really for families who already own the City Select LUX and want a practical double-stroller solution without replacing the whole system. If you don’t have that stroller, or if you’re only occasionally carrying a second child, it might feel like overkill. One tradeoff to note: you gain compact folding and a secure ride, but the added weight and width will affect maneuverability in very tight spaces.
Personally, I’d prioritize ease of installation and secure harness fit over extra bells and whistles. Those are the things that make or break daily usability.
The pros are clear: compact fold, UV-protective canopy, multi-position recline, and integrated pocket. The cons are mostly around added weight and slightly reduced maneuverability compared to a single stroller.
Value-wise, if you’re planning to regularly transport two children, this seat adds a lot of utility without the full cost of a new double stroller. The build quality feels solid: stitching is reinforced, the harness feels durable, and the recline mechanism is smooth. Over time, keep an eye on the brackets and folding joints to ensure they stay secure. Competitors in this space include other universal second seats, but few integrate as seamlessly with the City Select LUX or maintain this level of compact folding.
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Out of 10, I’d score Safety Confidence at 9—secure harness and proper mount make this reliable; Ease of Use at 8—the install is straightforward if you know your stroller; Comfort & Fit at 8—multi-position recline plus calf support are thoughtful; Cleanability at 7—polyester wipes down easily, but deep creases may trap crumbs; Portability & Storage at 8—folds compact, but weight adds up; Build Quality at 9—solid materials and construction; Value at 8—good investment for families planning regular double stroller use.
Thanks for watching Baby to Child. The link to the product is in the comments box, and I’d love to hear your questions or experiences if you’ve already tried it. Until next time, keep your little ones secure, your outings sane, and remember: parenting is a journey—from baby to child, and we’re here to make it a little smoother.
Available to buy here:

