Kirkland Signature Diapers review

Kirkland Signature Diapers are Costco's own brand, and the latest version adds features that used to belong to name brands. Costco's page lists up to 12 hours of absorbent protection from a super absorbent core, a pocketed waistband for blowouts, Stay Put strips for a secure fit, a wetness indicator that turns blue when wet and a next size indicator that tells you when to move up. The diaper is hypoallergenic and tested for sensitive skin, and it is made without fragrance, parabens, phthalates, lotions, elemental chlorine and natural rubber latex. Inner bags use post-consumer recycled material, and the diapers are not tested on animals. The catch is access and transparency: Kirkland diapers are sold only through Costco, the product page did not show a price from here, and Costco publishes less detail on materials than Huggies or Coterie do. We scored value on the bulk format, not on a verified price.

Who it is for

Costco shoppers who buy in bulk

Price

See vendor pricing (USD check pending).

US price check pending. See the vendor pricing page.

Key features

• Up to 12 hours of absorbent protection
• Pocketed waistband for blowouts
• Stay Put strips for a secure fit
• Next size indicator and a wetness indicator that turns blue
• Hypoallergenic liner, tested for sensitive skin

Strengths and weaknesses

• Strength: Made without fragrance, parabens, phthalates, lotions, elemental chlorine and natural rubber latex
• Strength: Inner bags use post-consumer recycled material
• Strength: Not tested on animals
• Weakness: Sold only through Costco
• Weakness: The Costco page showed no price when we checked
• Weakness: Fewer published details on materials than Huggies or Coterie

Key facts

• Protection: Up to 12 hours
• Blowouts: Pocketed waistband
• Indicators: Wetness and next size
• Made without: Fragrance, parabens, phthalates, lotions, elemental chlorine, latex
• Where to buy: Costco

Where it ranks

Kirkland Signature Diapers is No. 6 in our Best Diapers verdict.