I've met children who keep their clothes extremely clean, but it's statistically unlikely that the kids you know do. They need a cozy but durable solid black hoodie to keep them warm enough that you won't worry about them ice-cubing when they go outside. They also need that hoodie pouch to bring back treasures for you.
 
Gildan brand, black, heavyweight
8 oz.(US) 13.5 oz.(CA), 50/50 preshrunk cotton/polyester
Air jet yarn = softer feel and reduced pilling
Double-lined hood with color-matched drawcord
Double needle stitching at shoulder, armhole, neck, waistband and cuffs
Pouch pocket