If you’ve picked up a pack of DryNites and found yourself squinting at the size chart on the back, you’re not alone. The sizing isn’t always straightforward — especially when you’re dealing with an older or larger child whose weight doesn’t fall neatly into a single range. This guide cuts through the confusion so you can find the right fit the first time.
DryNites Size Guide: What the Ranges Actually Cover
DryNites (sold as Goodnites in some countries) currently come in three sizes for their pyjama pants range:
- Size 4–7 years — fits approximately 17–30 kg
- Size 8–15 years — fits approximately 27–57 kg
- Size 8–15 years Large/XL — fits approximately 36–65 kg (where available; availability varies by retailer)
These are weight-based, not age-based — the age labels are approximate guides only. A tall, lean eight-year-old and a shorter, heavier eight-year-old will often need different sizes. Always go by weight and, where possible, hip measurement.
How to Measure Before You Buy
Sizing errors are the most common reason DryNites leak — not absorbency failure. A too-small size compresses the leg cuffs and disrupts the fit; a too-large size gaps at the waist and legs.
What to measure
- Weight — the primary size indicator on the packaging
- Hip circumference — measure around the fullest part of the hips and bottom; this matters more than waist for overnight fit
- Waist circumference — especially relevant if your child is between sizes
If your child falls in the overlap zone — say, 27–30 kg where both the 4–7 and 8–15 ranges technically apply — try the larger size first. The 8–15 offers more absorbency, which matters overnight.
What Happens When the Size Is Wrong
Understanding fit failure helps you diagnose leaks before you blame the product outright. Fit problems and absorbency limits are two different things, and they call for different solutions.
Too small
- Leg cuffs dig in or leave red marks
- The waistband sits too low or digs at the hips
- The absorbent core doesn’t reach far enough front or back
- Leaks at the legs, especially when lying down
Too large
- Visible gaps at the legs when lying on their side
- Waistband rides up or doesn’t seal
- Product shifts position during the night
- Leaks that seem to bypass the product entirely
Leg leaks at night are particularly common and have more to do with how the product sits when a child is horizontal than how absorbent it is. For a detailed explanation of why this happens, see why the same pull-up leaks at the legs at night but not during the day.
DryNites for Older and Larger Children: Where the Range Runs Out
DryNites are widely available and a reasonable starting point for many families. But they have a ceiling — the largest standard size tops out around 57–65 kg depending on retailer and region. For children above this weight, or with a larger hip circumference, DryNites will not fit correctly regardless of absorbency.
This is a real gap. Older children who wet at night — particularly those aged 11 and above — often find that DryNites either don’t fit, are uncomfortable, or don’t hold enough volume for a full night. If your child is in this situation, it’s worth knowing that other options exist and are entirely appropriate. Higher-capacity pull-up products and taped-brief styles (sometimes called nappies for older children) serve this age group without compromise. They carry more absorbency, better coverage, and — for heavier wetters — more reliable containment.
For a broader look at how the bedwetting product market serves (and fails to serve) older children, this overview of the gap in the bedwetting product market is worth reading.
Absorbency: What DryNites Can and Cannot Handle
DryNites are designed for light to moderate overnight wetting. They are not high-capacity products. For children who void a full bladder during sleep — common in children with deep sleep patterns or who produce high urine volumes overnight — DryNites may leak not because of a fit issue but simply because the core is full.
Signs the product is reaching its absorbency limit (rather than a fit problem):
- The product feels fully saturated when removed
- Leaks tend to happen in the second half of the night
- The product fits well and there are no gaps, but leaks still occur
In these cases, the answer isn’t a better-fitting DryNites — it’s a higher-capacity product. A booster pad can extend absorbency in some pull-up styles, but it needs to sit correctly and not disrupt the leg seal. For a practical breakdown of what actually works, see how to stop leg leaks in overnight pull-ups.
Sensory and Fit Considerations for ASD and Sensory-Sensitive Children
For children with autism or sensory sensitivities, fit and comfort are not secondary concerns — they are the primary ones. A product that works technically but causes distress is not a workable solution.
DryNites use a soft, cloth-like outer material which many sensory-sensitive children tolerate well. The main complaints in this group tend to be:
- Waistband pressure (especially if the size is slightly too small)
- The rustling noise some pull-up materials make when moving
- Bulk between the legs, which some children find uncomfortable in certain sleep positions
If any of these are factors, sizing up — even slightly above the stated weight range — can reduce waistband pressure and leg bulk. It may also reduce the noise of the material under bedclothes. Getting the fit right isn’t just about leaks; it’s about whether your child will tolerate wearing the product at all.
DryNites vs Other Pull-Up Options: A Quick Comparison
DryNites are not the only pull-up option, and for some children they are not the best one. Here’s a brief comparison to help you work out where DryNites fit in the wider product landscape:
- DryNites (standard range) — good for moderate wetting, fits up to approximately 57–65 kg, widely stocked, reasonable cost per unit
- Higher-capacity pull-ups (e.g. iD Pants, TENA Pants) — greater absorbency, often available in larger sizes, less widely stocked in supermarkets but available online
- Taped briefs / shaped nappies (e.g. Tena Slip, MoliCare, Pampers in appropriate sizes) — maximum absorbency, best containment for heavy wetters, no pull-up action, appropriate for children who need or prefer them
- Bed pads used alongside pull-ups — a practical combination for reducing laundry when a product leaks occasionally
There is no hierarchy here. The right product is whichever one works for your child’s body, volume, and sensory needs.
Where to Buy DryNites — and What to Do When They’re Out of Stock
DryNites are stocked by most major UK supermarkets (Tesco, Asda, Sainsbury’s, Morrisons), Boots, Amazon, and specialist incontinence suppliers. The 8–15 range is the most widely available. The Large/XL variant is less consistently stocked in physical shops — online is more reliable for that size.
If DryNites are out of stock or unavailable in the size you need, the nearest like-for-like alternatives in terms of format and feel are:
- Huggies DryNites (if you’re in a market where Huggies are distinct from DryNites)
- iD Pants (available in multiple sizes including larger adult-range sizes that fit older children)
- TENA Pants Discreet or Maxi for children at the upper end of the weight range
Getting the Right Fit: A Summary
The DryNites size guide comes down to three things: weight, hip measurement, and honest assessment of overnight volume. Get the size right and the product performs as designed. Exceed its absorbency limit and the solution is a higher-capacity product, not a different fit. And if your child is beyond the DryNites weight range, that’s a sizing constraint — not a reflection of anything else — and there are well-designed alternatives that serve larger and older children effectively.
If you’re still finding that leaks persist even with a correctly fitted product, the issue may be structural rather than size-related. This explanation of why overnight pull-ups leak covers the design factors that no amount of size adjustment will fix — and what your realistic options are. And if the wider situation is taking a toll, how other parents manage night changes without burning out offers some practical perspective.