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One or two peas in a pod

+one is a revolutionary inline system that adapts from a single to a double stroller, whilst bearing all the hallmarks of Mountain Buggy’s bulletproof DNA. Take 1 newborn baby up to childhood years, 1 newborn baby and a toddler, or 2 toddlers - inline!



line drawings of +one in various positions


A complete bundle, +one comes with a plush cocoon carrycot for your
newborn baby, as well as the second seat for your growing family.

mother walking through the city with 2 children in +one

urban active, inline

Mountain Buggy’s superior Mark of Quality offers you complete versatility, functionality and uncompromised safety and performance. Cleverly engineered, the +one frame is made from strong yet lightweight high grade 6063 T5 aluminium. Rear wheel suspension and 12 inch air-filled tires absorb bumps across all terrain, offering ultimate comfort for your babies. Lock the front wheel straight for stability across uneven terrain, or switch to swivel for ultimate maneuverability.

line drawing demonstrating kerb pop

Outstanding curb pop

Compared with other brands, Mountain Buggies require less force to ‘pop’ up the front wheel thanks to perfect weight distribution for optimized performance. Glide effortlessly over all terrain in single or double stroller mode.


2 +one buggies shown with car seat and carrycot attached
Carrycot and car seat compatible

+one adapts to a bassinet style pram with the +one baby carrycot, allowing your baby to lie flat and face you.

Our range of +one car seat adapters allows you to attach most leading car seats to your stroller for ease of transporting baby.

close up of 2 children smiling in +one buggy

Comfortable and spacious for 1 or 2

+one’s wipe clean, 600D polyester fabric is water repellent and durable, and can be removed easily from the stroller frame. A zip extension in the main seat provides additional space for a newborn baby lying flat in their cocoon carrycot, or loads of storage for shopping and essentials when just 1 child is on board. A durable footwell provides plenty of legroom for a child sitting in the second seat, then zips away for convenience when not in use.

aerial shot looking down on +one buggy


Padded, tail free harnesses keep your babies secure in their seats and are easily adjusted as they grow. The main seat position in single mode transitions from full recline for a newborn baby to upright for an older child, with bumper bar included for their comfort.

close up side detail of +one follow the sun hood

Extra large follow-the-sun canopy

An adjustable canopy with flip out sun visor protects your babies from any angle. Zip-out mesh panels offer light and breath-ability, and allow you to keep an eye on your babies from above. Adjust the height of the canopy by moving it up the stroller frame to provide more head height for the child in the rear seat.

close up detail of handlebar height and stand fold for +one

Comfort and convenience for you

+one is simple to fold and stands independently to keep fabrics off the ground. An instant ‘click’ let’s you know the stroller frame has automatically locked when folded.

The durable, comfort grip handle is fully adjustable from 30.7 - 44.9" to suit any height or stride length. An easily engaged, foot operated brake sits at the base of the stroller, along with a gear tray to accommodate up to 11 lbs of storage. Additional storage space can be created using the main seat when the stroller is in single mode. Keep hydrated with a water bottle holder on board.


freerider and face-to-face compatible

girl scooting along on freerider

Connect freerider stroller board   to +one’s rear axle to accommodate a 3rd child. freerider transforms to a kids scooter (no tools required!), offering dual functionality for free-wheeling scooter fun!

Your baby can also face you in +one using the face-to-face rear facing seat.

freerider attached to +one


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