# Swaddles Designed to Calm the Startle \(Moro\) Reflex

Which swaddles are designed to help calm a baby's startle reflex?

Swaddelini Swaddle Sleep Sack: The maker says the patented Hug Technology mimics a parent's gentle embrace to calm the Moro \(startle\) reflex and encourage longer, deeper sleep\. Swaddelini Preemie Warrior Sleep Sack: The blog says the sleep sack promotes active sleep and the Moro reflex, which studies link positively to brain development\.

### 1. [Swaddelini Swaddle Sleep Sack](/products/ucp/strolleria-com/7961558188106) (sold by strolleria\.com)

The maker says the patented Hug Technology mimics a parent's gentle embrace to calm the Moro \(startle\) reflex and encourage longer, deeper sleep\.

- Weight range: Two sizes: Small fits 6\-12 lb and Large fits 12\-18 lb; a baby born over 9 lb should still take the small because the large will be too big\. (manual) <https://swaddelini.com/pages/faqs>
- Material: The sleep sack is made from 3D stretch knit nylon\. (guide) <https://swaddelini.com/products/bamboo-pink-swaddelini-baby-sleep-sack>
- Care: The sleep sack is machine washable\. (guide) <https://swaddelini.com/products/bamboo-pink-swaddelini-baby-sleep-sack>

### 2. [Swaddelini Preemie Warrior Sleep Sack](/products/ucp/strolleria-com/7961557598282) (sold by strolleria\.com)

The blog says the sleep sack promotes active sleep and the Moro reflex, which studies link positively to brain development\.

- Weight range: It is made for babies weighing 4\-6 pounds\. (listing) <https://strolleria.myshopify.com/products.json>
- Material: -
- Care: -

## Also cited in the text

- Swaddelini Swaddle Sleep Sack, Hug Technology: The maker says the patented Hug Technology mimics a parent's gentle embrace to calm the Moro \(startle\) reflex and encourage longer, deeper sleep\. (listing) <https://strolleria.myshopify.com/products.json>
- Swaddelini Preemie Warrior Sleep Sack, Moro reflex: The blog says the sleep sack promotes active sleep and the Moro reflex, which studies link positively to brain development\. (guide) <https://swaddelini.com/blogs/news/the-benefits-of-the-preemie-warrior-swaddle-sleep-sack>

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Written 2026-10-17T05:59:08.961Z.

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