Which Obaby Fitted Sheet Size Fits Your Mattress?
Obaby cot and cot bed mattresses come in two standard sizes: 120x60cm for a cot and 140x70cm for a cot bed. Choosing the correct fitted sheet is straightforward once you measure your mattress, but there are a few details worth checking before you buy.
Both sizes are available in packs of two from For Your Little One, made from premium-quality cotton. The sheets are designed to fit Obaby mattresses specifically, but they also work with standard cot mattresses of the same dimensions.
120x60cm vs 140x70cm: Key Differences at a Glance
- Mattress size: 120x60cm sheets are for standard cots; 140x70cm sheets are for cot beds (which convert into a toddler bed).
- Mattress depth compatibility: The 120x60cm sheet fits mattresses up to 15cm thick, including extra deep ones. The 140x70cm listing does not specify a maximum depth.
- Price: The 120x60cm pack costs USD 7.85 (catalog comparison USD 11.55), while the 140x70cm pack costs USD 9.23 (catalog comparison USD 13.99).
- Colour options: The 120x60cm sheet comes in 10 colours/patterns; the 140x70cm sheet is available in 4.
What Each Pack Offers
- Cot Fitted Sheets Compatible with Obaby Mattress 120x60cm - Pack Of 2: 2x Cot Fitted Sheets Compatible with Obaby Mattress (120x60cm). Made from premium-quality cotton. Fits mattresses up to 15cm thick. Elasticated skirt for secure fit. This pack is ideal for standard cots. The depth allowance (up to 15cm) means it works with most cot mattresses, including thicker models.

Cot Fitted Sheets Compatible with Obaby Mattress 120x60cm - Pack Of 2 - Cot Bed Fitted Sheets Compatible with Obaby Mattress 140x70cm - Pack Of 2: 2x Cot Bed Fitted Sheets Compatible with Obaby Mattress (140x70cm). Made from premium-quality cotton. Designed to fit Obaby 140x70cm mattresses perfectly. If you have a cot bed or a larger cot, this size is required. The pack of 2 helps you rotate sheets easily.

Cot Bed Fitted Sheets Compatible with Obaby Mattress 140x70cm - Pack Of 2
Materials and Comfort
Both sheets use premium-quality cotton, which is soft and breathable. The 120x60cm listing highlights all-season comfort, keeping your baby cool in summer and warm in winter. The 140x70cm listing describes the fabric as temperature-regulating and ultra-soft against sensitive skin.
Neither listing specifies a thread count or cotton type (e.g., organic). Both are machine washable at 30°C, which is convenient for busy parents.
Fit and Security
Both sheets have an elasticated skirt to keep them snug on the mattress. The 120x60cm sheet is designed for standard and extra deep mattresses up to 15cm thick, which helps prevent slipping and bunching. The 140x70cm sheet is described as perfectly tailored to hug the mattress securely, but the maximum mattress depth is not stated in the available information.
If you have a mattress thicker than 15cm, the 120x60cm sheet may not fit, and the 140x70cm sheet's compatibility with deep mattresses is unconfirmed.
Value of the Pack of 2
Both products come in packs of two, which means you always have a spare sheet ready for quick changes during laundry cycles. The 120x60cm pack costs USD 7.85 (about USD 3.93 per sheet), and the 140x70cm pack costs USD 9.23 (about USD 4.62 per sheet). The price difference reflects the larger size, not a difference in quality.
Having two sheets is practical for overnight accidents or when one is in the wash. You won't need to buy a single sheet separately.
Which One Should You Choose?
Measure your mattress first. If it is 120x60cm, choose the cot fitted sheet pack. If it is 140x70cm, choose the cot bed fitted sheet pack. There is no overlap: a 120x60cm sheet will be too small for a 140x70cm mattress, and a 140x70cm sheet will be too large for a 120x60cm mattress.
The 120x60cm sheet offers more colour options and a confirmed depth compatibility. The 140x70cm sheet is the only choice for larger mattresses and comes in four patterns. Both are made from soft cotton and are easy to care for.



