Childrens Sizing:
Age 5-6    20" 
Age 7-8    22"
Age 9-11  24" 
Age 12-13    26"
 
Adult Sizing:
Small        30" 
Medium   32" 
Large        34"
XLarge     36" 
2XLarge   38"
 
Fabric: 80% Ringspun cotton, 20% Polyester
 
This item has a 6 week lead time.