# Convertible cribs with adjustable mattress heights Which convertible cribs offer more than one mattress height setting? Westwood Design Dovetail Convertible Crib: The mattress support is steel spring with three adjustable heights\. Westwood Design UR\-CR\-8901NR\-BWE: It has a steel spring mattress support with three height adjustments\. Westwood Design Olivia Crib \(flat\-top convertible crib\): Use the highest setting for a newborn, lower it as the child grows and becomes mobile, and the lowest once the child can stand\. Babyletto Lolly 3\-in\-1 Convertible Crib with Toddler Bed Conversion Kit \(Item\# 9001 / M9001\): Praised for modern styling, GREENGUARD Gold certification, 3\-in\-1 conversion, adjustable mattress positions, sustainable pine, and non\-toxic finish\. ### 1. [Westwood Design Dovetail Convertible Crib](/products/ucp/modernnursery-com/7217832689764) (sold by modernnursery\.com) The mattress support is steel spring with three adjustable heights\. - Mattress height: The mattress support is steel spring with three adjustable heights\. (guide) - Conversion: It is a 4\-in\-1 crib that can be used as a crib, toddler bed, daybed and full\-size bed\. (guide) ### 2. [Westwood Design UR\-CR\-8901NR\-BWE](/products/ucp/modernnursery-com/7217834197092) (sold by modernnursery\.com) It has a steel spring mattress support with three height adjustments\. - Mattress height: It has a steel spring mattress support with three height adjustments\. (listing) - Conversion: The crib converts into a toddler bed, daybed and full\-size bed\. (guide) ### 3. [Westwood Design Olivia Crib \(flat\-top convertible crib\)](/products/ucp/modernnursery-com/4798962368612) (sold by modernnursery\.com) Use the highest setting for a newborn, lower it as the child grows and becomes mobile, and the lowest once the child can stand\. - Mattress height: Use the highest setting for a newborn, lower it as the child grows and becomes mobile, and the lowest once the child can stand\. (manual) - Conversion: The maker confirms toddler and full bed rails are sold separately\. (guide) ### 4. [Babyletto Lolly 3\-in\-1 Convertible Crib with Toddler Bed Conversion Kit \(Item\# 9001 / M9001\)](/products/ucp/modernnursery-com/4798897619044) (sold by modernnursery\.com) Praised for modern styling, GREENGUARD Gold certification, 3\-in\-1 conversion, adjustable mattress positions, sustainable pine, and non\-toxic finish\. - Mattress height: Praised for modern styling, GREENGUARD Gold certification, 3\-in\-1 conversion, adjustable mattress positions, sustainable pine, and non\-toxic finish\. (blog) - Conversion: The crib converts from crib to toddler bed and daybed, and the toddler bed conversion kit is included\. (guide) 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 2026-10-27T01:32:48.864Z. 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)