Cosatto
Cosatto Acorn 2 i-Size 0+ Car Seat – Whisper | Infant Carrier
Cosatto Acorn 2 i-Size 0+ Car Seat – Whisper | Infant Carrier
⭐Free UK Delivery
⭐i-Size and ADAC Tested
⭐Belt in Or use with Cosatto Acorn Rotating Isofix Base
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⭐ 4 Year Warranty
⭐ Delivery full tracked 2-4 Working Days
⭐ Click & Collect available
- Products picked independently by us
- Click and Collect Available
- Free UK Shipping Over £50
Cosatto Acorn 2 i-Size 0+ Car Seat – Whisper
Soft, serene and safe from day one — newborn travel in calming cream-beige comfort.
Introducing the Cosatto Acorn 2 i-Size 0+ Car Seat in Whisper, the beautifully neutral infant carrier designed to keep your baby protected and cocooned in soothing comfort from birth to approximately 15 months (40–87cm). With its gentle cream-beige palette, Whisper brings a warm, calming, minimalist feel that complements any pram or interior style.
Engineered to the latest R129/i-Size safety standards, the Whisper Acorn 2 offers enhanced side-impact protection, a plush newborn nest, eco-conscious fabrics and compatibility with the Cosatto Acorn Rotating Family Base (sold separately). This means quick ISOFIX installation, reduced seat movement and effortless side-facing access for easy lifting and fastening.
Chic, soft and safety-focused — Whisper is made for peaceful beginnings.
⭐ Why You’ll Love the Cosatto Acorn 2 i-Size – Whisper
1. i-Size Approved Safety for Total Reassurance
The Acorn 2 i-Size is tested to the advanced R129/i-Size regulation, ensuring outstanding protection through:
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Enhanced side-impact testing
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Rollover and crash evaluations
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Safer, longer rearward-facing travel (40–87cm)
Paired with the Acorn Rotating Family Base, installation becomes faster and more secure with ISOFIX + support-leg stability.
2. Superior Side-Impact Protection
Designed with a reinforced safety shell and flip-out Side Impact Protection System, the Whisper Acorn 2 absorbs and disperses crash forces — protecting your baby’s head, neck and spine during side collisions.
3. Thoughtful Features for Smoother Everyday Travel
The Acorn 2 i-Size makes life easier with:
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One-handed harness & headrest adjust
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Lightweight, easy-to-carry design
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Removable soft newborn nest
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Compatibility with Cosatto travel systems (adaptors on many models included)
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Fits multi-brand travel systems using universal adaptors
Ideal for seamless transitions from car to pram.
4. Comfort-Focused Design for Happy Little Travellers
Whisper features gentle, cushioning materials and practical touches including:
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UPF100+ extendable canopy for shade and protection
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Plush eco-friendly fabrics
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Energy-absorbing, padded interior
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Machine-washable covers for easy cleaning
Soft, breathable and made for snuggly journeys.
5. Eco-Friendly Fabrics & Sensory-Soothing Style
The Whisper colourway enhances the travel experience with:
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A calm, soft-toned palette designed to create a peaceful, nurturing environment
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Fabric made from 13 recycled plastic bottles, supporting Cosatto’s sustainability mission
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Visual simplicity that supports newborn sensory comfort
A seat that’s good for your baby and better for the planet.
What’s in the Box?
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Cosatto Acorn 2 i-Size Car Seat – Whisper
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Removable newborn support liner
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Instruction manual
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Vehicle compatibility list
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Cosatto 4-year guarantee card
Specifications
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Child Height: 40–87cm (birth – approx. 15 months)
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Max Child Weight: 13kg
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Travel Position: Rearward-facing only
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Installation:
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Vehicle 3-point seat belt
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ISOFIX when used with Acorn Rotating Family Base (sold separately)
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Compatibility & Installation
Vehicle Belt Installation:
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Rearward-facing 40–87cm
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Safe when installed with correct belt routing
With Cosatto Acorn Rotating Family Base:
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ISOFIX + support leg
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Smooth rotation for side-access harnessing
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Rearward-facing 40–87cm
Cosatto Acorn 2 i-Size 0+ Car Seat – Whisper
A beautifully neutral, soothing infant carrier with top-tier safety and comfort — ready to support every gentle first journey.
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Delivery is around 2-4 Working days. This is couriered to your home with full Tracking. Please NOTE We Can not Deliver To Northern Ireland Or Ireland.
Cosatto Acorn 2 i-Size 0+ Car Seat – Whisper | Infant Carrier

Cosatto Acorn 2 Car Seat FAQ's
From what age can my baby use the Acorn 2 i-Size Car Seat?
The Acorn 2 i-Size is suitable from birth up to approximately 15 months (40–87cm) and up to a maximum of 13kg.
Are the covers removable and washable?
Yes — the seat covers are removable for cleaning, making everyday messes easier to manage.
Are the fabrics suitable for newborns?
The seat uses plush, breathable fabrics designed with newborn comfort in mind. Many special edition colourways include recycled eco fabrics and sensory-supportive tones.
Does Cosatto offer a guarantee?
Yes — 4-year guarantee when registered.
Can I use Klarna with Cosatto products?
Yes — Klarna Pay-In-3 and Pay Later available at checkout.
Is the car seat i-Size compliant?
Absolutely. The Acorn 2 i-Size is R129/i Size certified, including enhanced side-impact and rollover testing.
It has also been independently ADAC Tested.
Do I need the ISOFIX base to use it?
The seat can be installed with a standard 3-point vehicle seat belt. For maximum ease and security, it can also be paired with the Acorn Rotating ISOFIX Family Base (included in some bundles or sold separately).
How does the rotating ISOFIX base help?
The rotating base allows side-facing access, making it easier to lift your baby in and out and to secure the harness correctly. It also reduces seat movement in the event of a collision.
Does the Acorn 2 i-Size come with a newborn insert?
Yes. A soft, supportive newborn liner is included to position your baby correctly and comfortably during the earliest months.
Is the Acorn 2 i-Size compatible with travel systems?
Yes. It fits Cosatto travel systems directly, and can be used with many other pram brands using multi-brand adaptors (model-specific).