# Sizing of ergoPouch sleep bundles Do ergoPouch sleep bundles run small, and is their sizing consistent? The checked facts do not say whether these bundles run small or whether sizing is consistent across them\. The sizing information that is available is listed below\. ergoPouch Winter Cocoon Swaddle Sack Bundle: Parents are told to choose the size using the child's weight rather than age\. The Newborn \(0000\) size pouch is 52 cm / 20\.5 in long, for children 3\-4 kg / 7\-9 lbs and 55 cm / 21\.7 in tall\. ergopouch US Winter Sleep Suit Sack Bundle: Size 8\-24M has a pouch length of 90 cm \(35\.4"\) and sleeve length of 32 cm \(12\.6"\), for children 8\-14 kg \(18\-31 lb\) and 68\-92 cm \(26\.8\-36\.2"\)\. On the 2\-4Y size the sleeves reportedly reach only about three\-quarters of the way down the arm and feel tight, and the front zip is not long enough\. ergoPouch Winter Sleep Sack Bundle: The sleep sack is available in sizes 3\-12M, 8\-24M, and 2\-4Y\. One parent found the 000\-1 size very large and planned to size down next time\. ergoPouch Newborn Sleep Style Bundles: Butterfly Cardi size guide: 0\-3M \(000\) is for 3\-6 kg and up to 62 cm; 2\-6M \(000\-00\) is for 6\-8 kg and 62\-68 cm\. ### 1. [ergoPouch Winter Cocoon Swaddle Sack Bundle](/products/ucp/ergopouch-com/9058494775465) (sold by ergopouch\.com) Parents are told to choose the size using the child's weight rather than age\. - Sizing method: Parents are told to choose the size using the child's weight rather than age\. (manual) - Size chart: The Newborn \(0000\) size pouch is 52 cm / 20\.5 in long, for children 3\-4 kg / 7\-9 lbs and 55 cm / 21\.7 in tall\. (manual) - Available sizes: - - Fit feedback: - ### 2. [ergopouch US Winter Sleep Suit Sack Bundle](/products/ucp/ergopouch-com/9058496217257) (sold by ergopouch\.com) On the 2\-4Y size the sleeves reportedly reach only about three\-quarters of the way down the arm and feel tight, and the front zip is not long enough\. - Sizing method: - - Size chart: Size 8\-24M has a pouch length of 90 cm \(35\.4"\) and sleeve length of 32 cm \(12\.6"\), for children 8\-14 kg \(18\-31 lb\) and 68\-92 cm \(26\.8\-36\.2"\)\. (manual) - Available sizes: - - Fit feedback: On the 2\-4Y size the sleeves reportedly reach only about three\-quarters of the way down the arm and feel tight, and the front zip is not long enough\. (review) ### 3. [ergoPouch Winter Sleep Sack Bundle](/products/ucp/ergopouch-com/9058494972073) (sold by ergopouch\.com) One parent found the 000\-1 size very large and planned to size down next time\. - Sizing method: - - Size chart: - - Available sizes: The sleep sack is available in sizes 3\-12M, 8\-24M, and 2\-4Y\. (guide) - Fit feedback: One parent found the 000\-1 size very large and planned to size down next time\. (blog) ### 4. [ergoPouch Newborn Sleep Style Bundles](/products/ucp/ergopouch-com/8524934316201) (sold by ergopouch\.com) Butterfly Cardi size guide: 0\-3M \(000\) is for 3\-6 kg and up to 62 cm; 2\-6M \(000\-00\) is for 6\-8 kg and 62\-68 cm\. - Sizing method: - - Size chart: Butterfly Cardi size guide: 0\-3M \(000\) is for 3\-6 kg and up to 62 cm; 2\-6M \(000\-00\) is for 6\-8 kg and 62\-68 cm\. (manual) - Available sizes: - - Fit feedback: - Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-12T16:07:37.197Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. The person approves the total; once RoboTrunk has checked the store's total against it, the person is given the checkout link to tap in their own browser, or, if the person prefers and gives permission, their agent may open the link and finish there, and payment always happens on the store's own checkout page. RoboTrunk never takes the payment or sees a card. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [Every tool, in your browser through WebMCP](/agent) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)