Improved Elasticity for Longer Use of Current Size: Top-Selling "MamyPoko Pants" Renewed
Unicharm is renewing its MamyPoko Pants in mid-April 2026. Featuring new 'stretchy fit' technology, the waistband stretches up to twice as much, allowing parents to use the current size longer and save money.
📋 Article Processing Timeline
- 📰 Published: March 31, 2026 at 20:03
- 🔍 Collected: April 1, 2026 at 13:39 (17h 35m after Published)
- 🤖 AI Analyzed: April 21, 2026 at 09:36 (475h 57m after Collected)
Unicharm Corporation (Representative Director, President & CEO: Takahisa Takahara) will renew 'MamyPoko Pants,' the No.1 selling baby diaper pants (*1), by equipping them with 'Nobi~ru Fit' (stretchy fit) technology. By enhancing the elasticity of the waistband, the product has been updated so that the current size can be used for a longer time, and will be launched nationwide starting in mid-April 2026.
*1 Intage SRI+ research: Baby disposable diaper pants market (Sept '24 - Aug '25) cumulative sales volume series ranking.
■ Background of the Launch
Generally, for baby disposable diapers, as the size goes up, the number of diapers per pack decreases, and the unit price per diaper increases. Therefore, sizing up leads to an increased cost burden on households. Under these circumstances, we have received many requests from customers who say, 'I want to continue using the current size for as long as possible.' On the other hand, it is also a crucial factor that the diaper fits the growing child's body shape and improves comfort. Thus, there was a demand to balance the need to 'keep costs down' with the need to 'use it comfortably.'
Therefore, by newly equipping 'MamyPoko Pants' with 'Nobi~ru Fit' technology, we are renewing the product to gently fit the changing body shape of growing children while allowing them to use the current size comfortably for a longer period.
■ Product Features
1. Improved waistband elasticity and fit with 'Nobi~ru Fit' technology (*2)
- We have newly adopted the 'Nobi~ru Fit' technology, which secures elastic materials using ultrasonic waves. Compared to the conventional fixation using adhesives (glue), this brings out the inherent elasticity, achieving up to twice the stretch (*3) compared to our conventional products.
- Because it stretches greatly with less force than conventional products, it gently fits growing body shapes, making it possible to use the current size for a longer time.
*2 Target sizes are four sizes: S, M, L, and Big.
*3 Compared to our conventional products.
- The improved elasticity also enhances the fit around the waist, realizing a structure that prevents slipping even after movement.
*1 Intage SRI+ research: Baby disposable diaper pants market (Sept '24 - Aug '25) cumulative sales volume series ranking.
■ Background of the Launch
Generally, for baby disposable diapers, as the size goes up, the number of diapers per pack decreases, and the unit price per diaper increases. Therefore, sizing up leads to an increased cost burden on households. Under these circumstances, we have received many requests from customers who say, 'I want to continue using the current size for as long as possible.' On the other hand, it is also a crucial factor that the diaper fits the growing child's body shape and improves comfort. Thus, there was a demand to balance the need to 'keep costs down' with the need to 'use it comfortably.'
Therefore, by newly equipping 'MamyPoko Pants' with 'Nobi~ru Fit' technology, we are renewing the product to gently fit the changing body shape of growing children while allowing them to use the current size comfortably for a longer period.
■ Product Features
1. Improved waistband elasticity and fit with 'Nobi~ru Fit' technology (*2)
- We have newly adopted the 'Nobi~ru Fit' technology, which secures elastic materials using ultrasonic waves. Compared to the conventional fixation using adhesives (glue), this brings out the inherent elasticity, achieving up to twice the stretch (*3) compared to our conventional products.
- Because it stretches greatly with less force than conventional products, it gently fits growing body shapes, making it possible to use the current size for a longer time.
*2 Target sizes are four sizes: S, M, L, and Big.
*3 Compared to our conventional products.
- The improved elasticity also enhances the fit around the waist, realizing a structure that prevents slipping even after movement.