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Designed for growing families from day one, the Mountain Buggy Duet Twin Travel System brings together the ultra-compact Duet V4 Pushchair with two Mountain Buggy Nest R129 i-Size Car Seats and two rotating ISOFIX bases. Whether you're welcoming twins or need a complete travel solution for two little ones, this bundle delivers outstanding safety, comfort and all-terrain performance from birth.
Despite being a side-by-side pushchair, the Duet is no wider than many single buggies, making it remarkably easy to navigate through standard doorways, busy shops and everyday adventures. Air-filled tyres, rear-wheel suspension and three-mode front wheels provide exceptional handling across everything from city streets to countryside trails, while lie-flat sling seats, UPF50+ canopies and breathable fabrics ensure both babies travel in complete comfort.
Each included Nest R129 i-Size Car Seat is suitable from 40-87cm (approximately birth to 20+ months) and pairs with its own 180° rotating ISOFIX base for effortless loading and secure installation. Lightweight yet packed with advanced safety features, the car seats offer extended rear-facing travel, intuitive visual installation indicators and one-hand release for smooth transitions from car to pushchair.
Beautifully finished with premium Heritage Collection fabrics and vegan leather accents, the Mountain Buggy Duet Twin Travel System is built to adapt as your family grows, giving you confidence, flexibility and comfort wherever your adventures take you.
Mountain Buggy Duet V4 Pushchair
Mountain Buggy Nest R129 i-Size Car Seat & Base
We carefully select every product in our range for its superior safety, sustainability, and quality. All items are backed by a comprehensive manufacturer’s warranty for added peace of mind. In the unlikely event of a fault or failure, our Customer Service team will provide full support throughout any warranty claims process.
We provide a range of fast and efficient shipping services to ensure your products arrive on time and in perfect condition.
Some size/weight restrictions apply for certain regions. Full details at checkout.
Questions? Our friendly team is happy to help! For more details, check our delivery page.
Returns
We offer a 60-day returns policy. For full details, see our full returns policy.
Give your little one the very best start with the Mountain Buggy Nest R129 i-Size Car Seat & Base. Certified to the latest R129 i-Size safety standards, it offers extended rear-facing travel from 40-87cm (approximately birth to 20+ months), with thick EPP energy-absorbing foam and protection tested for front, rear, side impact and rollover. Designed to give parents complete confidence, every journey begins with trusted safety.
The included 180° rotating ISOFIX base makes getting your baby in and out of the car wonderfully easy. Simply rotate the seat towards you for stress-free harness fastening and lifting, while intuitive green and red installation indicators provide reassurance that everything is securely fitted. At just 3.9kg, the lightweight car seat also clicks seamlessly onto compatible Mountain Buggy pushchairs for uninterrupted adventures.
Thoughtful comfort features ensure the Nest supports your little one from their very first journey home. The removable newborn insert provides a cosy, secure fit, while the one-hand adjustable headrest and harness move together through eight height positions as your baby grows. Finished with soft quilted fabrics, an extendable canopy and an included UPF50+ blackout cover, every ride is designed with comfort in mind.
Get hands-on with our most-loved pushchairs — with expert help every step of the way
