SMB Splint Boots Value PackContains a full set of four (4) boots at a substantial savings.Key Points of the SMB Splint Boots: booting all four legs allows the horse to comfortably maintain normal weight distribution the SMB-3 is a hybrid between the two best selling protective boots, the original SMB II and the new standard, the SMB Elite the exterior is constructed with Professionals Choice signature limestone-based neoprene together with an Ultra Shock liningthe SMB-3 safeguards the cannon bone, tendons and soft tissue, while absorbing energy from hoof impactSizes: Small, Med, Large NOTE: The SMB-3Ôö¼├û Value Pack contains 4 boots (2 rear and 2 front - The Small size Value Pack includes 2 small and 2 medium boots (for rear).Circum.HeightSmall13-14.3 Hands10.5"10"Medium15-15.3 Hands12.25"11.75"Large16-16.3 Hands12.75"12.5"