Kirkland Signature Diapers (Sizes 3-7) vs Pampers Swaddlers Ultra Diapers (Day + Night)
Side-by-side specs from each maker.
Only the differences are shown.
| Kirkland Signature Diapers (Sizes 3-7) | Pampers Swaddlers Ultra Diapers (Day + Night) | |
|---|---|---|
| Type | Disposable diaper | Disposable diaper |
| Sizes and weights | 3: 16–28 lb; 4: 22–37 lb; 5: 27+ lb; 6: 35+ lb; 7: 41+ lb | Newborn: up to 10 lb; 1: 8–14 lb; 2: 10–22 lb; 3: 13–26 lb; 4: 15–34 lb; 5: 20–37 lb; 6: 23–44 lb; 7: 26–50 lb; 8: 30+ lb |
| Wetness indicator | Yes | Yes |
| Fragrance-free | Yes, per the maker | Yes, per the maker |
| Chlorine-free | Yes, per the maker | Yes, per the maker |
| Materials | Costco says: ultra-soft breathable outer cover, liner, super absorbent core, stay-put strips, post-consumer recycled inner bags. Made without elemental chlorine | Not listed |
| Certifications | Not listed | OEKO-TEX Standard 100, FSC-certified cellulose sourcing, per the maker |
Kirkland Signature Diapers (Sizes 3-7)
Costco's own diaper for sizes 3 to 7, sold in large club packs. Costco lists a blue-when-wet indicator and says it is made without fragrance and elemental chlorine.
- Wetness indicator turns blue when wet
- Made without fragrance, per Costco
- Large per-size packs
- Club membership needed
Pampers Swaddlers Ultra Diapers (Day + Night)
Club-store version of Swaddlers sold in bulk, fragrance free with a wetness indicator.
- Sizes Newborn to 8
- Wetness indicator
- Sold only through club retailers