Best disposable nappies and nappy pants 2025: Which? Best Buys and expert buying advice

Our independent lab tests are designed to find out how effective nappies and nappy pants are at absorbing liquid quickly, keeping moisture away from your baby's skin and preventing leaks.

We also get parents to try the nappies and nappy pants with their baby and they rate them on the same factors as above, but with the benefit of parental insight. 

Which? members should log in now to view our recommendations below. If you’re not already a member, join Which? to get instant access to all our nappy reviews.

Best Buy disposable nappies for 2025

Cheapest Best Buy disposable nappies

These are some of the cheapest nappies we've tested.

Join Which? to get access to all our Best Buys and nappy reviews. We’ve tested nappies from big brands including Kit & Kin, Pampers and Rascal + Friends, but only the very best can be a Best Buy.

Best Buy disposable nappy pants for 2025

These are our highest-scoring Best Buy nappy pants.

Cheapest Best Buy disposable nappy pants

These are some of the cheapest nappy pants we've tested.

What's the difference between nappies and nappy pants?

Nappy pants are similar to nappies, but instead of fastening them via the sticky tab, you pull them up over your child's legs like pants.

They can be a useful option for toddlers or once your child gets too wriggly to lie still on a changing table. Pulling them on is often quicker than trying to fiddle with the two sides of a nappy, and means you can do a 'standing nappy change'. 

Nappy pants have an elasticated waistband to give a snug fit, plus sides you can tear, so you can pull them apart to remove the nappy quickly and with less mess.

The weight and size limits for nappy pants tend to start from around size 3 (6-11kg) and go up to size 8 (19kg+). While they can be used from the potty training period, their size ranges mean you can use them from an earlier age if you wish.

Preparing for a growing family

Our expert advice helps you make the best decisions for your loved ones

Visit our growing families hub

Why you can trust our nappy reviews

Best and worst disposable nappy brands

In our biannual online baby and child survey, we ask parents to rate five key features of a nappy brand: absorbency, comfort, ease of use, fit and value for money. 

Disposable nappy brand ratings

Only logged-in Which? members can view our recommendations in the table below. If you’re not yet a member, join Which? for access to our test results.

Best eco-friendly disposable nappy brands

Each nappy can take hundreds of years to degrade, so the sheer number of disposable nappies thrown away presents serious problems to the environment. This is particularly true when you consider that each baby could use more than 5,000 nappies before they're fully potty trained.

While most disposable nappies are recyclable, the UK doesn’t currently have the facilities to process them in the right way.

However, there are more eco-friendly disposable nappy options available. Some brands offer nappies made using sustainable wood pulp or packaging sourced from renewable materials.

Eco by Naty

Eco by Naty nappies are free from chlorine, latex, fragrances and tributyltin. The core is made from 100% FSC-certified wood pulp and the packaging is sourced from renewable materials.

See all our Eco by Naty nappy reviews.

Kit & Kin

Kit & Kin nappies are made using chlorine-free fluff pulp harvested from sustainably managed forests. The brand funds the protection of tropical rainforest and supports sustainable community development projects in Guatemala through the World Land Trust.

See all our Kit & Kin nappy reviews.

Pura

Pura proudly states that its nappies are made with 100% green electricity and no production waste to landfill. Pura is the only baby brand in Europe to be recycling disposable nappies.

See all our Pura nappy reviews.

How to buy the best disposable nappies

Size, fit and cost are all factors to consider when deciding which nappy to buy.

Sizes range from newborn nappies all the way through to potty-training pants. You can check the nappy’s size guide to help you pick the right size for your baby's weight.

Most disposable nappies are designed with easy-fastening sticky tabs, an elasticated waistband and elasticated leg holes to give a snug fit. You might need to experiment with different brands to find one that best fits your baby.

Cost can vary depending on the brand you choose. Supermarket own-label nappies are generally cheaper than big brands such as Pampers.

Disposable nappy pros Can simply be thrown away after use, widely available in supermarkets, easy to carry around when you're out and about, high absorbency.

Disposable nappy cons Can't be recycled in the UK; need to be continually restocked; some contain chemicals such as chlorine, perfume and dyes. 

If you're considering switching to cloth nappies, see our round-up of the best reusable nappy brands. 

How many disposable nappies do babies use per day?

It's likely that your baby will use between six and 12 disposable nappies a day in their first few months, decreasing as they get older.

This adds up to a lot of nappies. If your child went through eight nappies a day until they were two years old, it would add up to more than 5,800 nappies.

Nappy size guide

Sizes and weights may differ slightly between brands, but most will follow the size guide below:

• Size 0 (1-2.5kg, 2-5lbs)
• Size 1 (2-5kg, 5-11lbs)
• Size 2 (3-6kg, 7-14lbs)
• Size 3 (4-9kg, 8-20lbs)
• Size 4 (7-18kg, 15-40lbs)
• Size 4+ (9-20kg, 20-44lbs)
• Size 5 (11-25kg, 24-55lbs)
• Size 5+ (13-27kg, 28-59lbs) 
• Size 6 (16+kg, 35lbs +)
• Size 6+ (17+kg, 37lbs +)

It's not just nappies that are sized by weight – so are some car seats. See our guide to child car seat weight groups to find out what kind of car seat your baby should be in.

How much do disposable nappies cost?

Disposable nappies can cost anything from 6p to nearly 30p each, depending on which brand you choose.

Opting for cheap nappies could set you back around £20 a month, while choosing more expensive options could bring this figure to more than £100.

Spending more doesn’t guarantee a better nappy, either. In fact, our nappy survey results have uncovered a top-rated brand that offers some of the cheapest nappies around, as well as expensive brands that left parents dissatisfied.

Consider buying larger packs to reduce costs, but be wary of buying too much in one size as your baby may outgrow them sooner than you expect.

Take advantage of special offers – subscription services such as Amazon Family offer up to 15% off nappies, including Pampers. Also look out for free nappies and money-off vouchers through baby clubs. 

We now highlight Great Value nappies. These nappies must score 65% or more in our tests and be least 20% cheaper, per nappy, than the average cost of nappies we've tested.

Is it cheaper to use disposable or reusable nappies?

Reusable nappies are more expensive to buy initially, but they’re cheaper in the long run as you won't have to continually buy new packs of nappies. Some councils offer incentive schemes with benefits ranging from a free starter pack to vouchers that you can put towards the cost of reusable nappies.

How much do reusable nappies cost? We reveal how much you can save by switching to reusable nappies.

How to change a nappy

Regular nappy changes are essential because babies have very sensitive skin, so if it's in contact with faeces or urine for long periods, it could lead to redness and nappy rash - and a very unhappy baby.

What you'll need

• Changing mat or towel
• Fragrance-free or sensitive wipes, or cotton wool balls and water
• Nappy disposal bags
• Barrier cream
• Clean nappy
• Clean clothes (if needed).

Removing the old nappy and fitting a new one

Lay your baby flat on their back, undo the side tabs (or rip the sides if they're wearing nappy pants) and carefully slide the nappy away, using the top of it to scrape away any excess waste from your baby's skin.

Put the nappy to one side while you wipe your baby's bottom and genital area, making sure to get into any folds of skin. Girls should be cleaned from front to back. 

If it's warm enough, consider giving your baby five minutes of nappy-free time to let them air their skin - but make sure they're lying down or sitting on a washable surface in case they do another pee or poo. Also, if they're on a changing table, you shouldn't leave them unattended.

Apply nappy rash or barrier cream if needed, then put them into a new nappy. Make sure it fits snugly and that little boys have their penis facing downwards to stop leaks creeping up above the waistband of the nappy.

Give your baby plenty of smiles and eye contact, as nappy changes are a great opportunity to bond and help their development.

How do I dispose of nappies?

First try to empty the nappy waste into the toilet, then roll up the nappy and reseal with the tabs. 

You can then place it in a plastic bag kept only for nappies, tie it up and put it in the outside rubbish bin. 

Disposable nappies can't be recycled, but some councils do offer a disposable nappy collection, so you may want to check locally. 

See our round-up of the best reusable nappy brands for a more eco-friendly alternative.

Where to buy cheap Pampers

We looked for the cheapest place to buy stage 4 nappies as these are popular with parents of young babies, and they're the size we test in our nappy reviews.

We tracked the price of a 44-pack of Pampers Baby-Dry size 4 maxi (8-16kg) nappies and looked for the best price for a single pack.

Our table below shows where you could get these Pampers size 4 nappies for the cheapest price from 1 July 2023 to 30 June 2024. 

*Prices include regular discounts but not multibuys or loyalty prices

Based on the average price per nappy, Asda, Morrisons and Ocado were the cheapest places to go for Pampers size 4 nappies over the past year. This is based on the average price over the entire year.

However, as you can see from the table, the cheapest price for a pack varied enormously between retailers and went as low as £5.

Boots and Waitrose were the most expensive, with an average price of between £11.82 and £12 per pack.

It's worth noting that while Tesco sits mid-table, you may get better deals if you're using a Clubcard, as there are frequently deals on Pampers nappies.

Best price for supermarket own-brand nappies 

Most supermarket own-brand nappies tend to work out cheaper than premium brands such as Pampers. 

We also compared the price of a 48-pack of size 4 nappies across supermarket nappy ranges and looked for the best price for a single pack from 1 July 2023 to 30 June 2024. 

*Prices include regular discounts but not multibuys or loyalty prices

There's been a fair amount of price matching in the past year, with Aldi, Ocado, Tesco and Lidl all offering similar average prices for a pack of 48 own-brand size 4 nappies. However, for some brands this is an increase on their cost per pack – Lidl increased from 5.8p per nappy to 6.1p.

All but one of the brands priced their nappies at £2.89 at some point over the past year, which works out at around 6p per nappy, so it's worth picking up a pack during your next shop to see how you get on with them.

Aldi vs Lidl nappies: how do they compare? 

Disposable nappies vs reusable nappies

While disposable nappies are convenient, reusable nappies could be worth considering if you’re looking for a more environmentally friendly option.

You'll need to pay more upfront for reusable nappies, but they’re cheaper in the long run as you won't have to continually buy more. 

However, reusable nappies are less convenient as they have to be washed and dried after use.

Some parents decide to use a mixture of both, opting for reusable nappies at home and disposables on days out or holidays. Others use disposables during the night and reusables during the day.  

Find out more about the pros and cons of reusable nappies in our guide on buying the best reusable nappies.