# Sleep sacks for cooler nights Can a sleep sack be layered over pyjamas on cooler nights? ergoPouch Cocoon Swaddle Sack / Cocoon Swaddle Bag: The store page's structured product data records a TOG Rating of 3\.5 TOG for this product\. Testers of the 3\.5 TOG reported their babies slept through cold nights that had previously woken them from being cold\. Quincy Mae Jersey Sleep Bag Sage Stripe: It is described as an easy layering piece for bedtime routines\. ergoPouch Jersey Sleep Suit Sack 0\.2 TOG: The 0\.2 TOG is classed as the Cool Pouch, for 22°C and above\. No checked fact states whether any of these sacks can be worn over pyjamas\. ### 1. [ergoPouch Cocoon Swaddle Sack / Cocoon Swaddle Bag](/products/ucp/ergopouch-com/8279849861289) (sold by ergopouch\.com) The store page's structured product data records a TOG Rating of 3\.5 TOG for this product\. - Warmth rating: The store page's structured product data records a TOG Rating of 3\.5 TOG for this product\. (guide) - Cold nights: Testers of the 3\.5 TOG reported their babies slept through cold nights that had previously woken them from being cold\. (blog) - Layering: - - Room temperature: - ### 2. [Quincy Mae Jersey Sleep Bag Sage Stripe](/products/ucp/albeebaby-com/9615745417447) (sold by albeebaby\.com) It is described as an easy layering piece for bedtime routines\. - Warmth rating: - - Cold nights: - - Layering: It is described as an easy layering piece for bedtime routines\. (guide) - Room temperature: - ### 3. [ergoPouch Jersey Sleep Suit Sack 0\.2 TOG](/products/ucp/ergopouch-com/8261740724393) (sold by ergopouch\.com) The 0\.2 TOG is classed as the Cool Pouch, for 22°C and above\. - Warmth rating: - - Cold nights: - - Layering: - - Room temperature: The 0\.2 TOG is classed as the Cool Pouch, for 22°C and above\. (manual) 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 2026-10-23T00:36:41.168Z. 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)