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All over the world people measure animals in different ways, along the back, around the chest and hind legs or by weight. 

We are based in the UK, but we are from New Zealand, where we measure all of our products along the back of the animal, neck to tail, then work out the correct conversion. If you get confused or have any questions about our sizing, please feel free to get in touch. 

We will update and improve our sizing guides as we get feedback from our customers. We started with horse rugs and calf jackets but now  our customers are using our products on sheep, goats, alpacas and dogs. We learn about these from you, so please send us your feedback and pictures so we can share with new customers looking to protect their animals. 



Measurements are taken along the back, neck to tail. 

Smaller Breeds like Jersey's can use the small size for new borns. 

Holstein's would use the medium for new borns and small for premature & twins. 

Larger Breeds like Belgium Blue's would be better using the Large for new borns and medium for premature & twins. 

Our New Zealand style canvas jackets are measured in feet and inches and tend to be used for longer periods outdoors during spring. (New Zealand Farming System)

2'0 = 24" Medium , 2'3 = 27" Large , 2'6 = 31" X Large

calf jacket supplier



For most standard size horses this guide will be accurate. Heavy Horse, Pony and Mini Sizes we will update soon. 

NOTE: These measurements are intended for use as guide only. We recommend you measure your horse first for increased accuracy. Our patterns are standard to generous fit. You can go up 1 size for broad horses.
Horse rug size guide


Horse Rug Size Guide (hands) 11 12 13 14 14.2 15 16 16.2 17 18
UK Rug Size in feet (b)  5' 5'3 5'6 5'9 6'0 6'3 6'6 6'9 7' 7'3
Bottom measurement in Inches 60" 63" 66" 69" 72" 75" 78" 81" 84" 87"
 Bottom measurement in CM 152 160 168 175 183 191 198 206 213 221
NZ Rug Size in feet (a) 3'6 3'9 4'0 4'3 4'6 4'9 5'0 5'3 5'6 5'9
Back measurement in Inches 42" 45" 48" 51" 54" 57" 60" 63" 66" 69"
Back measurement in CM 106 114 122 130 137 145 152 160 168 175



Measurements are taken along the back, neck to tail. 

Rams will generally need 36" & 39" 

Lambs will generally use 22" & 24" 

Different breeds come in differnt shapes, but as long as the measurment along the back is used, we are in the right starting point. If the sheep breed is smaller in the front and not much of a chest, these may need to have a dart/ seam stictched into the neck area for a better fit. If the breed is very solid and extra chunky, you could go 1 size up to allow for the extra room needed. 

AniMac Sheep Coat