How long can bub stay rear-facing in this seat?

Until roughly 30 months, depending on your child's size.

Will it fit three-across in my car?

See the fit guide above, or ask our fitting team.

Is the cover machine-washable?

Yes, on a gentle cold cycle. Air dry only.

ISOFix or seatbelt — which should I use?

Both are equally safe when installed correctly. Use whichever your car supports and you find easier to fit.

Adjustable Extension Strap

Name: Adjustable Extension Strap
Brand: InfaSecure
SKU: CS113 4P.BLACK
Price: 41.95 AUD
Availability: InStock

$41.95

or 4 × $10.48 with Afterpay

• Adjustable Length – Extra tether reach where an extension is required.
• Top-Tether Accessory – Designed to support compatible restraint installations.
• Practical Fit Solution – Adjustable format for different vehicle setups.

In stock, ships from SydneyClick & Collect in 2hrs (Kingsgrove)

Quantity:

Adjustable Extension Strap

$41.95

Sustainably Sourced

INPAA Accredited

Australian Owned & Operated

Details & specifications

Description

Use the Adjustable Extension Strap with the upper anchorage / top tether strap on child restraints. When required, use the extension strap for additional length to reach the vehicle anchor point. The Extension Strap adjusts from 200mm to 900mm. This is ideal for when you are unsure of the amount of length required. Additionally, this means it will suit most vehicles. It is suitable for child restraints manufactured from March 1993 onwards that have a snap-hook connection.

Specifications & dimensions

Dimensions
• Width - 4cm
• Height - 2cm
• Length - Adjustable between 200mm to 900mm

Will it fit my car?

Use only with compatible restraints where the manual permits a top-tether extension.

Installation & manuals (PDF)

1 1709 A5 CS113 Instructions

Shipping & returns

Please refer to our Shipping and Returns FAQs to understand our offers by region.

Award-winning, again and again

FAQs

Common questions

Contact us

How long is the InfaSecure Adjustable Extension Strap?

The strap is adjustable from 20 cm to 90 cm, allowing you to select the additional length needed to reach your vehicle’s anchor point. Its adjustable design makes it suitable for a wide range of vehicle and restraint combinations.

Is the Adjustable Extension Strap compatible with my car seat?

The Adjustable Extension Strap is suitable for child restraints manufactured from March 1993 onwards that feature a snap-hook connection. Compatibility depends on the restraint’s top tether connection rather than the specific car seat model. Always check your child restraint instructions before fitting an extension strap.

Contact us

Reviews

What parents say

Free delivery over $199

Australia-wide, to your door

Easy 30-day returns

Change of mind covered

Lifetime shell warranty

On car seats, backed for the long run

Afterpay & Zip available

Spread the cost, interest-free

"Fitted the Quattro in 10 minutes. The install video made it easy."

Verified buyer · NSW

"Cot arrived fast, mattress bundle saved us $80."

Verified buyer · VIC

"Customer service actually answered. Rare these days."

Verified buyer · QLD

Everything they need, right here

Shop all categories

Car Seats & Capsules

Booster Seats

Nursery

Prams

Feeding

Play

Adjustable Extension Strap

Details & specifications

Award-winning, again and again

Common questions

What parents say

You may also like

Everything they need, right here