Available sizes: 3 mons, 2-3 yrs old ✓ Size on Tag: 3 mons (could fit newborn depending on baby's built) Measurements when laid flat: Waist - approx. 8.5" Length - approx. 13.5" ✓ Size on Tag: 24m (fits 2 - 3 yrs. old) Measurements when laid flat: Waist - approx. 11" Length - approx. 19.5" Condition: Brand New Without Tag Kindly check measurements before buying.