Cheapest Pull-Up – S Diapers in Japan | Price per diaper
Where Can You Find the Lowest Price Right Now?
The current lowest effective price is ¥18.2 per diaper as of September 22, 2026. Including campaigns and reward points, "MamyPoko Doraemon Design Pull-Up Diapers – Size S" sold by 楽天24 ベビー館 is currently the cheapest option.
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#1 ¥18.2/diaper MamyPoko Doraemon Design Pull-Up Diapers – Size S 【販売店：楽天24 ベビー館】
1
MamyPoko Doraemon Design Pull-Up Diapers – Size S
4~9kg ★4.8 (58)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥24.9¥18.2
156 diapers ¥3,927¥3,327Free 35pt483ptYou can save about ¥6.7 per diaper with the following offers applied!
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楽天24 ベビー館
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#2 ¥20.0/diaper MamyPoko Doraemon Design Pull-Up Diapers – Size S 【販売店：楽天24】
2
MamyPoko Doraemon Design Pull-Up Diapers – Size S
4~9kg ★0.0 (5861)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥24.9¥20.0
156 diapers ¥3,927¥3,327Free 35pt211ptYou can save about ¥4.9 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 初回限定 600円OFFクーポン
rakuten
楽天24
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#3 ¥20.2/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：楽天24 ベビー館】
3
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★4.8 (4049)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥28.8¥20.2
222 diapers ¥6,460¥5,860Free 58pt1,385ptYou can save about ¥8.6 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 初回限定 600円OFFクーポン
- Auto Applied +19%pt
rakuten
楽天24 ベビー館
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#4 ¥22.7/diaper Merries First Premium Pull-Up Diapers – Size S 【販売店：楽天24 ベビー館】
4
Merries First Premium Pull-Up Diapers – Size S
4~8kg ★4.7 (126)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥33.3¥22.7
156 diapers ¥5,239¥4,639Free 47pt1,096ptYou can save about ¥10.6 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 初回限定 600円OFFクーポン
- Auto Applied +19%pt
rakuten
楽天24 ベビー館
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#5 ¥22.7/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：楽天24 ベビー館】
5
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★4.7 (4329)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥29.5¥22.7
186 diapers ¥5,530¥4,930Free 50pt717ptYou can save about ¥6.8 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 初回限定 600円OFFクーポン
- Auto Applied +9%pt
rakuten
楽天24 ベビー館
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#6 ¥22.9/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：マツモトキヨシ楽天市場店】
6
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★4.3 (7)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥24.3¥22.9
186 diapers ¥4,554 Free 41pt289ptYou can save about ¥1.4 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
rakuten
マツモトキヨシ楽天市場店
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#7 ¥23.4/diaper Merries First Premium Pull-Up Diapers – Size S 【販売店：セイムスオンライン楽天市場店】
7
Merries First Premium Pull-Up Diapers – Size S
4~8kg ★5.0 (3)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥30.4¥23.4
156 diapers ¥4,785 Free 43pt1,130ptYou can save about ¥7.0 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 【】+19%pt
rakuten
セイムスオンライン楽天市場店
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#8 ¥24.2/diaper moony Marshmallow Soft Touch Pull-Up Diapers – Size S 【販売店：楽天24 ベビー館】
8
moony Marshmallow Soft Touch Pull-Up Diapers – Size S
★4.8 (380)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥31.7¥24.2
162 diapers ¥5,190¥4,590Free 47pt667ptYou can save about ¥7.5 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 初回限定 600円OFFクーポン
- Auto Applied スーパーDEAL +10%pt
rakuten
楽天24 ベビー館
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#9 ¥25.8/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：子育ての店 ベビー・キッズ】
9
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★4.7 (510)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥27.3¥25.8
372 diapers ¥10,263 Free 93pt653ptYou can save about ¥1.5 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
rakuten
子育ての店 ベビー・キッズ
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#10 ¥25.8/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：暮らし健康ネット館】
10
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★0.0 (22)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥27.3¥25.8
372 diapers ¥10,263 Free 93pt653ptYou can save about ¥1.5 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
rakuten
暮らし健康ネット館
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#11 ¥25.8/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：便利生活 マイルーム】
11
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★4.2 (9)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥27.3¥25.8
372 diapers ¥10,263 Free 93pt653ptYou can save about ¥1.5 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
rakuten
便利生活 マイルーム
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#12 ¥25.8/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：快適ホーム】
12
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★4.2 (1549)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥27.3¥25.8
372 diapers ¥10,263 Free 93pt653ptYou can save about ¥1.5 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
rakuten
快適ホーム
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#13 ¥25.8/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：こどもラボ】
13
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★4.7 (361)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥27.3¥25.8
372 diapers ¥10,263 Free 93pt653ptYou can save about ¥1.5 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
rakuten
こどもラボ
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#14 ¥26.4/diaper moony Gap-Free Leak Protection Pull-Up Diapers – Size S 【販売店：楽天24】
14
moony Gap-Free Leak Protection Pull-Up Diapers – Size S
4~8kg ★4.7 (17)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥31.6¥26.4
162 diapers ¥5,161¥4,561Free 46pt290ptYou can save about ¥5.2 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 初回限定 600円OFFクーポン
rakuten
楽天24
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#15 ¥26.5/diaper MamyPoko Doraemon Design Pull-Up Diapers – Size S 【販売店：Amazon販売店】
15
MamyPoko Doraemon Design Pull-Up Diapers – Size S
4~9kg ★4.5 (2)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥26.9¥26.5
156 diapers ¥4,233 Free 42pt106ptYou can save about ¥0.4 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Amazon Mastercard Holder +1.5%pt
amazon
Amazon販売店
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#16 ¥26.8/diaper GOO.N Soft Touch Pull-Up Diapers – Size S 【販売店：姫路流通センター】
16
GOO.N Soft Touch Pull-Up Diapers – Size S
4~9kg ★0.0 (115)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥28.4¥26.8
124 diapers ¥3,550 Free 32pt225ptYou can save about ¥1.6 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
rakuten
姫路流通センター
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#17 ¥27.2/diaper moony Natural Pull-Up Diapers – Size S 【販売店：楽天24 ベビー館】
17
moony Natural Pull-Up Diapers – Size S
4~8kg ★4.8 (515)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥35.5¥27.2
150 diapers ¥5,369¥4,769Free 48pt693ptYou can save about ¥8.3 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 初回限定 600円OFFクーポン
- Auto Applied スーパーDEAL +10%pt
rakuten
楽天24 ベビー館
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#18 ¥27.3/diaper Merries First Premium Pull-Up Diapers – Size S 【販売店：マツモトキヨシ楽天市場店】
18
Merries First Premium Pull-Up Diapers – Size S
4~8kg ★5.0 (38)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥28.9¥27.3
156 diapers ¥4,554 Free 41pt289ptYou can save about ¥1.6 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
rakuten
マツモトキヨシ楽天市場店
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#19 ¥27.6/diaper Merries Air-Through Dry Skin Pull-Up Diapers – Size S 【販売店：楽天24】
19
Merries Air-Through Dry Skin Pull-Up Diapers – Size S
4~8kg ★4.5 (15)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥32.4¥27.6
186 diapers ¥6,084¥5,484Free 55pt348ptYou can save about ¥4.8 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied 初回限定 600円OFFクーポン
rakuten
楽天24
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#20 ¥28.3/diaper MamyPoko Doraemon Design Pull-Up Diapers – Size S 【販売店：KIMURAYA NET TASTE】
20
MamyPoko Doraemon Design Pull-Up Diapers – Size S
4~9kg ★5.0 (1)Effective Price/diaper Quantity Price incl. Tax Shipping Estimated Points ¥29.9¥28.3
156 diapers ¥4,712 Free 42pt299ptYou can save about ¥1.6 per diaper with the following offers applied!
Your Benefits
Change Benefit Settings 》- Auto Applied Rakuten Card Holder +2%pt
- Auto Applied Rakuten Mobile Subscriber +4%pt
Discounts & Campaigns Available Today
- Auto Applied +0%pt
rakuten
KIMURAYA NET TASTE
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The lowest price is calculated based on the price per diaper, including shipping and reward points. Prices and conditions may vary depending on your personal settings and the latest information, so please check the retailer’s website for the most accurate details.
「適用する」は詳細ページにてクーポン取得やエントリーすると誰でもお得になるため、忘れずに申請してね（販売サイトで自動適用されないので見逃し多数💦）
Features and How to Choose Pull-Up – S Diapers
A pull-up diaper size generally recommended for babies weighing 4 to 8kg, often introduced from around 4 months old when babies begin sitting with support. This is commonly the first size used when switching from tape diapers to pull-up diapers. Pull-up diapers are easy to change whether the baby is lying down or standing, and a snug leg fit helps prevent leaks as babies move more. Once crawling becomes active, pull-up diapers are often easier to use and stay in place better.
