# Crib conversion kits and crib mattress fit

Which crib conversion kits fit a crib mattress?

Oeuf Classic Toddler Bed Conversion Kit: Fits a standard 28 inch wide by 52 inch long crib mattress, which is not included\. Kalon Caravan Conversion Kit: Fits a standard\-size crib mattress\.

### 1. [Oeuf Classic Toddler Bed Conversion Kit](/products/ucp/modernnursery-com/4799346638948) (sold by modernnursery\.com)

Fits a standard 28 inch wide by 52 inch long crib mattress, which is not included\.

- Mattress fit: Fits a standard 28 inch wide by 52 inch long crib mattress, which is not included\. (listing) <https://modern-nursery-test-store.myshopify.com/products.json>
- Dimensions: The kit dimensions are 30\.25 x 54\.25 x 36 inches\. (listing) <https://modern-nursery-test-store.myshopify.com/products.json>
- Age suitability: Comfortable sleeping for a child to age 6\. (listing) <https://modern-nursery-test-store.myshopify.com/products.json>

### 2. [Kalon Caravan Conversion Kit](/products/ucp/modernnursery-com/4798889951332) (sold by modernnursery\.com)

Fits a standard\-size crib mattress\.

- Mattress fit: Fits a standard\-size crib mattress\. (listing) <https://modern-nursery-test-store.myshopify.com/products.json>
- Dimensions: -
- Age suitability: -

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Written 2026-10-18T16:12:28.918Z.

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