Walker's Passive Infant Muff is engineered for infant to toddler. It features a comfort headband with a Growband included to help with fit as young heads grow and has a NRR of 20 dB.
Specifications:

Type	Earmuff
Color	Blue
NRR	22 dB
Quantity	1 Pair
Style	Over the Head
AFT Circuit
Battery
Compression Circuit
Material	Plastic