I bought my kid a mathews mini genesis:

Draw Weight
6 to 12 lbs. (adjustable)
Draw Length
14" to 25"
Axle to Axle Length
29 1/8" (Approx)
Brace Height
6 1/8" (Approx)
Riser Length
16" (Approx)
Physical Weight
2 lbs. (Approx)

I put a WB rest on it so when she draws it back the arrow dont fall off. It's a nice little bow to start with. When she out grows it her sister will be ready for it.