Waterproof Mattress Protector Sizes: 120x60 vs 140x70 vs Toddler
By Mokee | Published: 2026-11-05
Category: Guide all'acquisto
Match the protector to your mattress size: 120x60 for cribs, 140x70 for cot beds and toddler beds, and 190x90 for single kids' beds. Get the right fit every time.
Quick answer
Buy the protector that matches your mattress dimensions exactly: 120x60 for a crib or cot, 140x70 for a cot bed or toddler bed, and 190x90 for a single kids' bed. If you're unsure, measure the mattress first—an elasticated protector only works if the size is right.
Why an exact size match matters more than fabric
A waterproof protector only does its job if it stays flat and fully covers the mattress. An undersized cover pulls tight at the corners and leaves edges exposed; an oversized one bunches under the sheet and can trap heat or create ridges. The elastic band is designed to hold the protector snugly around the mattress, so the stated dimensions are the first thing to check.
Fabric comes second. Mokee's cot and toddler protectors use a soft fabric, while the kids' single uses Tencel—a sustainable fiber—but neither will compensate for a poor fit. Measure length and width (and depth if your mattress is unusually thick) before ordering.
When a two-pack makes sense—and when it doesn't
A 2 pack mattress protectors set is practical for the early years, when night-time leaks and spills happen more often. Having a spare means you can wash one while the other is in use, so the mattress is never left unprotected. The 120x60 and 140x70 cot bed protectors are both available as two-packs.
For older children in a single bed, a single protector is usually enough because accidents are less frequent and you can wash and dry it during the day. If your child still has occasional accidents, a spare is still worth considering—but check the wash label first, since frequent hot washes can wear out any waterproof layer over time.
The trade-off: cot bed vs toddler bed in the same 140x70 size
A cot bed and a toddler bed often share the same 140x70 mattress size, so a protector labelled for one will physically fit the other. The difference is usually in the product listing and pack size, not the dimensions. If you already own a 140x70 cot bed protector, you can use it on a toddler bed of the same size—just check that the elastic is still snug after repeated washes.
The practical exception is depth. Some toddler mattresses are thinner than cot bed mattresses, so an elasticated protector may feel slightly loose. In that case, tuck the excess under the mattress or choose a protector specifically listed for toddler beds.
Decision rules for choosing your protector size
- Measure the mattress, not the bed frame: Use a tape measure on the mattress itself. If it measures 120x60, choose the 120x60 protector; if 140x70, choose the 140x70; if 190x90, choose the 190x90. Do not rely on the cot or bed label alone.
- Match the protector to the current sleep stage: For a crib or cot, pick the 120x60. For a cot bed or toddler bed, pick the 140x70. For a single kids' bed, pick the 190x90. If your child is about to move from cot to bed, buy the next size up only when the new mattress arrives.
- Decide on a two-pack based on laundry frequency: Choose a 2-pack if you wash the protector more than once a week or have a child prone to leaks. Choose a single protector if you can wash and dry it during the day and want to spend less.
- Check the depth if your mattress is thicker than average: The elastic band is designed for standard mattress depths. If your mattress is unusually deep, the protector may not tuck under securely—measure the depth before ordering and consider sizing up only if the length and width still match.
Product facts
- 2 Pack Cot Bed Mattress Protectors | 120x60 | White Waterproof: 2-pack of 120x60 waterproof protectors with an elastic band for a snug fit. The 120x60 size fits standard cribs and cot mattresses, and the spare cover keeps you covered on wash day.
2 Pack Cot Bed Mattress Protectors | 120x60 | White Waterproof - 2 Pack Cot Bed Mattress Protectors | 140x70 | White Waterproof: 2-pack of 140x70 waterproof protectors with an elastic band for a snug fit. This is the size for most cot beds and many toddler beds, so it covers the transition from cot to first bed.
2 Pack Cot Bed Mattress Protectors | 140x70 | White Waterproof - Toddler Bed Mattress Protector | 140x70 | White Waterproof: Single 140x70 waterproof protector for toddler beds. A good choice if you only need one cover for a toddler bed and don't want to store a spare.
- Kids Bed Mattress Protector | 190x90 | White Waterproof: 190x90 waterproof protector made with Tencel for single kids' beds. The larger size fits a standard single mattress and the Tencel fabric adds a softer, more sustainable option for older children.
Who each size suits
Best for
- Parents of babies in a crib or cot (120x60)
- Families with a cot bed or toddler bed (140x70)
- Parents of older children in a single bed (190x90)
- Households that want a spare cover for night-time accidents (2-pack)
Not for
- Anyone who hasn't measured the mattress first
- Very deep or non-standard mattress sizes not listed here
- Adult beds or double mattresses
