Reader-supported. When you buy through our links we may earn a commission — it never changes what we recommend.
Best BudgetDiapers
Kirkland Signature Supreme Diapers
Costco's house-brand diaper that quietly punches way above its price and has a devoted following of thrifty parents.
89
NewMom Index
89 / 100
Price range $$$
We may earn a commission from these links, at no cost to you.
The verdict
Kirkland Supreme is the smart-money pick: soft, reliably absorbent, with a wetness indicator, sold in giant boxes at a per-diaper cost that undercuts the name brands. Quality is consistently high and blowouts are rare. The catch is access, since you need a Costco membership and they start at size 1, so they don't cover the newborn/preemie stage. Skip them if you don't have a Costco relationship or you need a true newborn size out of the gate.
What we love
- ✓Excellent per-diaper value that beats the major national brands
- ✓Soft, absorbent, and includes a wetness indicator despite the low price
- ✓Big-box sizing means fewer reorders and less running out
- ✓Consistent quality with a loyal, hard-to-please parent following
Keep in mind
- –Starts at size 1, so no preemie or newborn coverage
- –Effectively requires a Costco membership to buy
- –Fewer purchase points than national brands if you run out mid-week
Is the Kirkland Signature Supreme Diapers right for you?
Budget-focused Costco families past the newborn stage who want quality without the brand markup.