Baby Bloomers Size Guide: How to Choose the Right Fit
By NICO | Published: 2026-10-23
Category: Buying Guides
Find the perfect baby bloomers size with our practical guide. Learn how to measure, choose between snug and roomy fits, and what to look for in elastic waists and legs.
Quick answer
For the best baby bloomers fit, choose a size based on your baby's current weight and height, then decide between a snug or roomy fit depending on whether you prioritize staying power or nappy coverage.
Why size matters for baby bloomers
Baby bloomers are designed to be loose and comfortable over nappies, but getting the size right affects both comfort and practicality. Too small, and the elastic may dig in or the bloomers won't cover the nappy properly. Too large, and they may slip down or bunch up, especially during active crawling or walking.
Key measurements to take
Use a soft measuring tape to measure your baby's waist (just above the hip bones) and hip (around the widest part). Also measure from the waist to the crotch to estimate rise. Compare these measurements against the brand's size chart, which typically lists weight or height ranges.
Choosing between snug and roomy
A snug fit keeps bloomers in place during movement, ideal for active babies. A roomy fit allows for nappy bulk and is more forgiving as your baby grows. The supplied 3 Pack of Baby Bloomers features elastic legs and waist with a roomy fit to allow for nappy, making them a good choice if you prefer extra space.
Decision rules for baby bloomers sizing
- Measure first, then check the size chart: Take your baby's waist, hip, and rise measurements. Compare them to the brand's weight or height ranges. If your baby is between sizes, size up for a roomier fit or size down for a snugger one. Always measure your baby before buying, even if you know their age.
- Consider your baby's activity level: For crawlers and walkers who need bloomers to stay put, choose a snugger fit. For younger babies who spend more time lying or sitting, a roomy fit is more comfortable and easier to dress.
- Check the rise and leg openings: The rise should be long enough to cover the nappy without pulling at the crotch. Leg openings should be snug but not tight. If the bloomers have elastic, ensure it doesn't leave red marks after wear. If the rise is too short, the bloomers will ride up and be uncomfortable.
- Account for growth: If you want the bloomers to last several months, size up and rely on the elastic waist and legs to keep them secure. This works well with roomy-fit styles like the 3 Pack of Baby Bloomers. Roomy fits with elastic give you more room for growth without sacrificing function.
Product facts
- 3 Pack of Baby Bloomers: Pack includes 3 bloomers with elastic legs and waist and a roomy fit to allow for nappy. The roomy fit accommodates nappy bulk and gives your baby freedom to move, while the elastic ensures the bloomers stay in place without being too tight.
3 Pack of Baby Bloomers
Who should choose what
Best for
- Parents who want a practical, multi-pack option with natural dye colors
- Babies who need a roomy fit to accommodate cloth or bulky disposable nappies
Not for
- Parents seeking a very tight, stay-in-place fit for extremely active toddlers who might prefer a snugger style
