NEW dog jerseys from PETS FIRST. This version normally now has the yellow trim. All "00." The XXL and SM and XS are all the blue trim in the second picture.
 
XS 4-8 lbs
SM 7-15 lbs
MD 15-28 lbs
LG 32-48 lbs
XL 42-62 lbs
 
This weight chart is approximate. THESE 4006 JERSEYS ARE "00" AND HAVE WHITE TRIM.