Muffin's Halo Blind Dog Guide Color:Blue Girth or circumference around the

Girth or circumference around the body at widest point

Touch pad volume and pulse frequency control

These measurements will determine what size Front Wheel Attachment you need

5" 10" Walkin' Wheels Medium 6 - 9

Muffin's Halo Blind Dog Guide Color:Blue Girth or circumference around theHow to Measure Now that you have measurements, find the size that fits your dog The girth measurement is the most important, so if your measurements fall under different sizes, choose the one that aligns with your dogs girth. 1 2 3 NECK 6" 8"(15cm 20cm) 8" 9. 5"(20cm 24cm) 10" 11. 5"(25cm 29cm) GIRTH 8. 5" 10"(21cm 25cm) 10. 5" 13. 5"(26cm 34cm) 14" 16. 5"(35cm 42cm) PROFILE 4" 5"(10cm 12cm) 5" 6"(12cm 15cm) 5" 6"(12cm 15cm) 4 5 6 NECK 11. 5" 13"(29cm