The One2 Second Seat gives you the freedom to convert your stroller from single to tandem. It connects straight to the stroller frame with no adaptors required. Travel system compatible and comes with an XL UPF50+ Extendable Canopy. The easy adjust harness makes buckling in your child a breeze and the harness pads provide extra comfort for your little one. Made with love for You. Discover the Britax difference today! Tandem Mode Designed to convert your One2 stroller from single to tandem. Connects straight to the stroller frame, no adaptors required. Travel System Compatible For easy transition from car to stroller without waking the little one. The lower seat can also accomodate a baby capsule. Adaptors required. XL UPF50+ Extendable Canopy Water repellent, sun visor and breathable mesh view & ventilation window. One Hand Recline Three adjustable backrest positions from sitting upright to near flat recline. Easy Adjust Harness Simply adjust the no-rethread harness up or down. Harness Pads Provide extra comfort for your little one. Seat Extenders To increase the distance between the upper and lower seat when in tandem mode. Rear Wheel Mud Guards To protect little fingers from the rear wheels.
The One2 Second Seat gives you the freedom to convert your stroller from single to tandem. It connects straight to the stroller frame with no adaptors required. Travel system compatible and comes with an XL UPF50+ Extendable Canopy. The easy adjust harness makes buckling in your child a breeze and the harness pads provide extra comfort for your little one. Made with love for You. Discover the Britax difference today! Tandem Mode Designed to convert your One2 stroller from single to tandem. Connects straight to the stroller frame, no adaptors required. Travel System Compatible For easy transition from car to stroller without waking the little one. The lower seat can also accomodate a baby capsule. Adaptors required. XL UPF50+ Extendable Canopy Water repellent, sun visor and breathable mesh view & ventilation window. One Hand Recline Three adjustable backrest positions from sitting upright to near flat recline. Easy Adjust Harness Simply adjust the no-rethread harness up or down. Harness Pads Provide extra comfort for your little one. Seat Extenders To increase the distance between the upper and lower seat when in tandem mode. Rear Wheel Mud Guards To protect little fingers from the rear wheels.
in 7 offers
last seen 6 Oct 2026
The lowest price we last saw for Britax One2 Second Seat Mineral Grey was $210.00 at Baby Train, compared across 7 retailers (last seen 6 Oct 2026). Prices may have changed since.
The all-time low we recorded was $210.00 on 30 Nov 2025.
Prices last updated 6 Oct 2026.
Britax One2 Second Seat Mineral Grey
The One2 Second Seat gives you the freedom to convert your stroller from single to tandem. It connects straight to the stroller frame with no adaptors required. Travel system compatible and comes with an XL UPF50+ Extendable Canopy. The easy adjust harness makes buckling in your child a breeze and the harness pads provide extra comfort for your little one. Made with love for You. Discover the Britax difference today! Tandem Mode Designed to convert your One2 stroller from single to tandem. Connects straight to the stroller frame, no adaptors required. Travel System Compatible For easy transition from car to stroller without waking the little one. The lower seat can also accomodate a baby capsule. Adaptors required. XL UPF50+ Extendable Canopy Water repellent, sun visor and breathable mesh view & ventilation window. One Hand Recline Three adjustable backrest positions from sitting upright to near flat recline. Easy Adjust Harness Simply adjust the no-rethread harness up or down. Harness Pads Provide extra comfort for your little one. Seat Extenders To increase the distance between the upper and lower seat when in tandem mode. Rear Wheel Mud Guards To protect little fingers from the rear wheels.
The One2 Second Seat gives you the freedom to convert your stroller from single to tandem. It connects straight to the stroller frame with no adaptors required. Travel system compatible and comes with an XL UPF50+ Extendable Canopy. The easy adjust harness makes buckling in your child a breeze and the harness pads provide extra comfort for your little one. Made with love for You. Discover the Britax difference today! Tandem Mode Designed to convert your One2 stroller from single to tandem. Connects straight to the stroller frame, no adaptors required. Travel System Compatible For easy transition from car to stroller without waking the little one. The lower seat can also accomodate a baby capsule. Adaptors required. XL UPF50+ Extendable Canopy Water repellent, sun visor and breathable mesh view & ventilation window. One Hand Recline Three adjustable backrest positions from sitting upright to near flat recline. Easy Adjust Harness Simply adjust the no-rethread harness up or down. Harness Pads Provide extra comfort for your little one. Seat Extenders To increase the distance between the upper and lower seat when in tandem mode. Rear Wheel Mud Guards To protect little fingers from the rear wheels.
Last updated at 06/10/2026 00:11:41
Britax One2 Second Seat - Mineral Grey Prams & Strollers
Delivery between 12–16 Oct $79.81
Britax Safe-N-Sound One2 Second Seat, Mineral Grey
Delivery between Wed – Fri $14.95
Britax One2 Second Seat Mineral Grey
Delivery between 7–13 Oct $16.65
Britax One2 Second Seat, Mineral Grey
Delivery between 8–14 Oct $9
Britax One2 Second Seat - Mineral Grey (39736 )
Delivery between 9–19 Oct $24.95
One2 Second Seat Mineral Grey
Delivery between Wed – Thu $10
Britax One2 Second Seat - Mineral Grey
Delivery between Thu – Mon $10
| Subtype | Second Seat |
| Safety Standards | Australian Safety Standard |
| Age Range | Newborn |
| Top Use Cases | Travel System Compatibility |
| Typical Users | UNISEX |
Britax One2 Second Seat - Mineral Grey Prams & Strollers
Delivery between 12–16 Oct $79.81
Britax Safe-N-Sound One2 Second Seat, Mineral Grey
Delivery between Wed – Fri $14.95
Britax One2 Second Seat Mineral Grey
Delivery between 7–13 Oct $16.65
Britax One2 Second Seat, Mineral Grey
Delivery between 8–14 Oct $9
Britax One2 Second Seat - Mineral Grey (39736 )
Delivery between 9–19 Oct $24.95
| Subtype | Second Seat |
| Safety Standards | Australian Safety Standard |
| Age Range | Newborn |
| Top Use Cases | Travel System Compatibility |
| Typical Users | UNISEX |
