How to measure your dog
See chart below

How to measure your dog

3XSMALL 1.0 pounds to 3.5 pounds and/or 5" to 7" from shoulder to tail
2XSMALL 3.5 pounds to 6.0 pounds and/or 7" to 9" from shoulder to tail
XSmall 6.0 pounds to 7.5 pounds and/or 9" to 11" from shoulder to tail
SMALL 7.0 pounds to 17.0 pounds and/or 11" to 15" from shoulder to tail
Medium 17.0 pounds to 40.0 pounds and/or 15" to 19" from shoulder to tail
Large 40.0 pounds to 70.0 pounds and/or 19" to 23" from shoulder to tail
XLarge 70.0 pounds to 120.0 pounds and/or 23" to 25" from shoulder to tail
2XLarge 120.0 pounds to 160.0 pounds and/or 25" to 32" from shoulder to tail
3xLarge 160.0 pounds to 200.0 pounds and/or 32" to 34" from shoulder to tail