English translation of an article originally published in Japanese on May 20, 2021. Read the Japanese original (Japanese). Product information and dates refer to the original article. Images and manufacturer videos may contain Japanese.

Compare retail incontinence insert pads by breathability, skin-conscious design, size and number of voids.
Incontinence insert pads vary in their skin-contact surface, backing, dimensions and absorbency guide. This article checks official information from seven manufacturers and compares currently listed retail products for adults. Product information was checked on October 2, 2026. Availability varies by retailer.
Breathability, moisture permeability and skin-conscious design

How moisture passes through the backing of a pad
Breathable or moisture-permeable backing is designed to allow moisture vapor to escape while resisting liquid leakage. The skin-contact material and measures to reduce wetness returning to the surface are also points to check. Breathability alone does not guarantee prevention of skin problems. The outer diaper’s breathability, positioning against the body and frequency of changes also matter.
Precautions for use
Layering multiple incontinence insert pads does not simply add their rated numbers of voids together. It may trap moisture or create gaps against the body. Use one pad at a time that suits the outer diaper and change it when wet. Consult a healthcare or care professional if redness, pain or skin damage persists.
The pads below are mainly for use with tape-fastened adult diapers. Pads specifically designed for pull-on adult diapers are not included.
Product examples by manufacturer
The tables show manufacturer-listed pad dimensions and absorbency guides. Products with the same number of voids can have different shapes and dimensions, so check these along with the product name.
Unicharm · Lifree
Low-Irritation Reassurance Incontinence Insert Pad, 4 Voids
This range is designed with attention to friction against the skin and wetness returning to the surface. Check the skin-contact surface structure as well as moisture permeability when choosing.

Image source: Unicharm official website
| Product name | Pad dimensions | Absorbency guide (voids) |
| Low-Irritation Reassurance Incontinence Insert Pad, 4 Voids | 28×55cm | 4 voids |
| Low-Irritation Reassurance Incontinence Insert Pad, 6 Voids | 28×60cm | 6 voids |
| Long-Wear Reassurance Incontinence Insert Pad, Daytime Ultra Super | 28×55cm | 5 voids |
| All-Night Reassurance Incontinence Insert Pad, Nighttime | 28×55cm | 4 voids |
| All-Night Reassurance Incontinence Insert Pad, Nighttime Super | 30×64cm | 6 voids |
| All-Night Reassurance Incontinence Insert Pad, Nighttime Super Plus | 30×64cm | 8 voids |
| All-Night Reassurance Incontinence Insert Pad, Nighttime Ultra Super | 30×64cm | 10 voids |
Numbers of voids are manufacturer-stated guides based on 150 mL per void.
Source: Unicharm official website
Daio Paper · Attento
Long-Wear Leak Reassurance Pad, Wide Type, 4-Voids Absorbency
The Long-Wear Leak Reassurance Pad, Wide Type has a wide 30 × 56 cm shape that covers the buttocks and a fully breathable backing. Its absorbency guide is 4 voids.

Image source: Daio Paper official website
| Product name | Pad dimensions | Absorbency guide (voids) |
| Long-Wear Leak Reassurance Pad, Wide Type | 30×56cm | 4 voids |
| Overnight One-Pad Reassurance, Reduces Trapped Moisture for Long-Wear Absorbency | 28×49cm | 4 voids |
| Overnight One-Pad Reassurance, Leak Protection for Sound Sleep Until Morning | 32×63cm | 6 voids |
| Overnight One-Pad Reassurance, Leak Protection for Sound Sleep Until Morning | 32×63cm | 8 voids |
| Overnight One-Pad Reassurance, Sound Sleep Until Morning Even for Especially Heavy Urination | 32×63cm | 10 voids |
| Overnight One-Pad Reassurance, Generous 12-Voids Absorbency for Extra Reassurance Until Morning | 32×63cm | 12 voids |
Numbers of voids are manufacturer-stated guides based on 150 mL per void.
Source: Daio Paper official website
Kao · Relief
Strong Absorbency Leak Reassurance Pad / Extra-Reassuring Sound Sleep Pad
The current pads for tape-fastened adult diapers are the 3-void “Strong Absorbency Leak Reassurance Pad” and the 4- and 6-void “Extra-Reassuring Sound Sleep Pad.” All are described as fully breathable.

Image source: Kao official online store
| Product name | Pad dimensions | Absorbency guide (voids) |
| Strong Absorbency Leak Reassurance Pad | 20×48cm | 3 voids |
| Extra-Reassuring Sound Sleep Pad | 26×56cm | 4 voids |
| Extra-Reassuring Sound Sleep Pad | 28×60.5cm | 6 voids |
Numbers of voids are manufacturer-stated guides based on 150 mL per void.
Source: Kao official website
Livedo Corporation · Refre
Skin-Conscious Pad, One Pad for All-Night Reassurance, 4-Voids Absorbency
This range uses mildly acidic material on the skin-contact surface and a moisture-permeable sheet on the waterproof side. Widths for the 4-, 6- and 9-void products have been updated to match current official specifications.

Image source: Livedo Corporation official website
| Product name | Pad dimensions | Absorbency guide (voids) |
| One Pad for All-Night Reassurance | 26×56cm | 4 voids |
| One Pad for All-Night Reassurance | 28×60.5cm | 6 voids |
| One Dry Pad for All-Night Reassurance | 28×60.5cm | 9 voids |
Numbers of voids are manufacturer-stated guides based on 150 mL per void.
Source: Livedo Corporation official website
Hakujuji · Salva
Ateraku Pad, One Until Morning: Nighttime, Nighttime Super and Strong Absorbency
The current product name is “Ateraku Pad, One Until Morning.” The blue standing leak guards can guide positioning. Nighttime, Nighttime Super and Strong Absorbency versions are available.

Image source: Hakujuji official website
| Product name | Pad dimensions | Absorbency guide (voids) |
| Ateraku Pad, Super Wide Long-Wear | 28×55cm | 4 voids |
| Ateraku Pad, One Until Morning, Nighttime | 28×58cm | 5 voids |
| Ateraku Pad, One Until Morning, Nighttime Super | 28×64cm | 7 voids |
| Ateraku Pad, One Until Morning, Strong Absorbency | 28×64cm | 12 voids |
Numbers of voids are manufacturer-stated guides based on 150 mL per void.
Source: Hakujuji official website
Nippon Paper Crecia Hadacare Acty
Incontinence Insert Pad, Deodorizing and Antibacterial Plus, 6 and 8 Voids
The 6- and 8-void models are listed here. The official page describes a cloth-like, fully breathable backsheet and the structure of the skin-contact surface.

Image source: Nippon Paper Crecia official website
| Product name | Pad dimensions | Absorbency guide (voids) |
| Incontinence Insert Pad, Deodorizing and Antibacterial Plus | 30×57cm | 6 voids |
| Incontinence Insert Pad, Deodorizing and Antibacterial Plus | 32×63cm | 8 voids |
Numbers of voids are manufacturer-stated guides based on 150 mL per void.
Source: Nippon Paper Crecia official website
Kami Shoji · Elmore Ichiban
Generous Absorbency Pad for Comfort Until Morning
The official pages describe both the “Generous Absorbency Pad for Comfort Until Morning” and “Tea-Powered Comfortable Night Pad” as fully breathable.

Image source: Kami Shoji official website
| Product name | Pad dimensions | Absorbency guide (voids) |
| Generous Absorbency Pad for Comfort Until Morning | 32×62cm | Approximately 6 voids |
| Tea-Powered Comfortable Night Pad | 32×62cm | Approximately 6 voids |
Numbers of voids are manufacturer-stated guides based on 150 mL per void.
Source: Kami Shoji official website
Summary
When prioritizing skin-conscious design, check the backing’s breathability and moisture permeability, the skin-contact material, and the structure that reduces wetness returning to the surface. The number of voids is a selection guide, not a guarantee of a change interval. Prioritize a size that fits the body and suits the outer diaper, and change the pad while monitoring the skin.

When choosing a pad, check its fit to the body and compatibility with the outer diaper as well as the number of voids. Consult a healthcare or care professional if skin redness or pain persists.
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