Now includes a therapeutic pad. When saturated with medication, pad carries ingredients to the affected area of the hoof without spilling or running. Provides continuous soaking without removing boot. 
 
Top opens wide for easy on/off. Inside front to back measurements: 
M, #1 - 5-1/4"Wx5-5/8"L;
L, #2 - 5-5/8"Wx6-1/8"L;  
XL, #3 - 6-1/4"Wx7"L. 
 
Sold individually.