Diaper Sizes for Newborns: Size 1 vs Size 2
By Honest Baby and Beauty Company | The Honest Company | Published: 2026-10-22
Category: Comparisons
Comparing Honest Clean Conscious Diapers in Size 1 and Size 2 for newborns. Learn the key differences, fit guidance, and which size suits your baby best.
Quick answer
For most newborns, start with Size 1 (up to 14 lbs) and move to Size 2 (12–18 lbs) when the weight range overlaps or you notice red marks or leaks. Both sizes offer the same Comfort Dry Technology and OEKO-TEX® certification, so the choice is purely about fit.
Why size matters for newborn comfort
A diaper that fits well prevents leaks and keeps your baby comfortable. Honest Clean Conscious Diapers are designed to protect delicate skin, but even the softest diaper won't work if the size is wrong. The main difference between Size 1 and Size 2 is the weight range, which affects how the diaper sits around the legs and waist.
Size 1 vs Size 2: trade-offs at a glance
- Weight range overlap (12–14 lbs): Both sizes cover the 12–14 lb range. If your baby is in this zone, choose based on whether you prefer a snugger fit (Size 1) or more room to grow (Size 2). Check your baby's weight weekly during this overlap period.
- Leak protection: Both sizes offer up to 100% leak protection with Comfort Dry Technology. The difference is not in absorbency but in how the diaper seals around the legs.
- Cost per diaper: Size 1 costs USD 0.68 per diaper; Size 2 costs USD 0.60 per diaper (catalog comparison price USD 1.00 for both). Size 2 is slightly more economical if your baby fits. If your baby is at the low end of Size 2, you may save money by skipping a Size 1 box.
Product facts
- Honest Clean Conscious Diaper®, All The Alpacas, Size 1: Honest Clean Conscious Diaper®, All The Alpacas, Size 1, fits babies up to 14 lbs. Size 1 is ideal for the first weeks when your baby is growing quickly and needs a snug, leak-free fit.
Honest Clean Conscious Diaper®, All The Alpacas, Size 1 - Honest Clean Conscious Diaper®, Rose Blossoms, Size 2: Honest Clean Conscious Diaper®, Rose Blossoms, Size 2, fits babies 12–18 lbs. Size 2 accommodates the rapid weight gain after the newborn phase, giving you a longer wear window before the next size up.
Honest Clean Conscious Diaper®, Rose Blossoms, Size 2
Which size fits your baby?
Best for
- Newborns under 12 lbs who need a snug, secure fit
- Parents who want to use the smallest size for the first few weeks
Not ideal for
- Babies over 14 lbs who need more room in the waist and thighs
- Parents looking for the most cost-effective option per diaper
