What side of the serta master sleeper mattress is for infants?

One side of your mattress should have sheep labeled with a "1/16" on them, and the other side should have sheep labeled "1".

The "1/16" side is the baby side, and the "1" side is the toddler side.

The numbers appear to refer to years of age, although it beats me why anyone would think "1/16" was a baby's age. "1/12" I'd understand.

Background: I had to look HARD to find any info about Serta crib mattresses. No specs seem to exist anywhere on the Web, except for ad copy. I finally found a Serta advertisement that had some sheep labeled variously, with "1/16", "1/10", etc. being the smaller baby sheep, and "1", "2", etc. on the larger, toddler-size, sheep.