# Adjusting the Doona harness

How is the harness adjusted and routed on a Doona seat?

Doona X: The integrated 5\-point harness connects to the headrest so height adjusts without rethreading\. Doona Doona\+ Replacement Infant Insert: The insert is required until 11 lb or until the shoulders sit below the bottom harness slots\. Doona Doona\+ Infant Car Seat Stroller with Base: Doona publishes separate user guides for the Doona\+ Car Seat & Stroller and the Doona\+ LATCH Base, plus fabric\-refitting and aircraft\-installation guides\.

### 1. [Doona X](/products/ucp/megababiesusa-com/9259934449918) (sold by megababiesusa\.com)

The integrated 5\-point harness connects to the headrest so height adjusts without rethreading\.

- Harness adjustment: The integrated 5\-point harness connects to the headrest so height adjusts without rethreading\. (guide) <https://www.doona.com/en-us/car-seat-stroller/discover-doona-x>
- Insert and harness slots: -
- User guide: A Doona X Car Seat & Stroller user guide is available in English \(US\) and Spanish \(US\)\. (manual) <https://www.doona.com/en-us/support/user-guides>

### 2. [Doona Doona\+ Replacement Infant Insert](/products/ucp/megababiesusa-com/8769205469438) (sold by megababiesusa\.com)

The insert is required until 11 lb or until the shoulders sit below the bottom harness slots\.

- Harness adjustment: -
- Insert and harness slots: The insert is required until 11 lb or until the shoulders sit below the bottom harness slots\. (blog) <https://www.thecarseatpros.com/blog/doonareview>
- User guide: -

### 3. [Doona Doona\+ Infant Car Seat Stroller with Base](/products/ucp/megababiesusa-com/787600801853) (sold by megababiesusa\.com)

Doona publishes separate user guides for the Doona\+ Car Seat & Stroller and the Doona\+ LATCH Base, plus fabric\-refitting and aircraft\-installation guides\.

- Harness adjustment: -
- Insert and harness slots: -
- User guide: Doona publishes separate user guides for the Doona\+ Car Seat & Stroller and the Doona\+ LATCH Base, plus fabric\-refitting and aircraft\-installation guides\. (manual) <https://www.doona.com/en-us/support/user-guides>

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Written 2026-10-23T20:57:49.518Z.

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