Nappy size guide

Babies come in all shapes and sizes, and what absorbency you use underneath can also have an impact on the fit, so we have simply provided the measurements for each size.

If in doubt we recommend going for the bigger size as wool will still work well if baggy and the self-tie waist should prevent the nappy from sliding down. Plus babies grow so fast!

Can’t find your size? We are fully size inclusive and can custom make any size you wish, from preemies to adults. Drop us a message at admin@fleursfibres.co.uk to see how we can help.

Nappy covers in the 4 main sizes.
SizeTotal length
(from waist to leg)
Total width
(taken from the widest point)
Inside leg
(length of ribbed cuff)
Guidance from real parents
122cm20.5cm3cmFirst tried at 12lbs (5.5 kgs) and gave a perfect fit with growing room.
Fits 0-5 months over bulky night nappies. Fits at 8 months over day nappies such as preflats.
228cm24cm3.5cmFits with plenty of room over night nappies at 15lbs (7kgs).
331cm26cm4cmBeing used successfully on a 14lbs (6.5kgs) baby.
Fits over bulky night nappies at nearly 2 years old (28lbs / 13 kgs).
437cm29.5cm4.5cmAs above but with lots of room for growth.

If you little one is in (or about to be in) clothing aged 24 months+ then we’d recommend choosing this size.
All measurements taken laid flat, and are approximate.