A = Back length. Measure the length from the withers to the ears.
B = Side length. Measure half way up the neck, the length from the mane to the bottom of the neck.

Order size
Top length (A) Side length (B)
XXS 80 cm 2'7" 31.5" 56 cm 1'10" 22"
XS 86 cm 2'9" 33.9" 59 cm 1'11" 23.2"
S 92 cm 3'0" 36.2" 62 cm 2'0" 24.4"
M 97 cm 3'2" 38.2" 62 cm 2'0" 24.4"
L 101 cm 3'3" 39.8" 62 cm 2'0" 24.4"
XL 106 cm 3'5" 41.7" 67 cm 2'2" 26.4"
Order size XXS
Top length (A) 80 cm Top length (A) 2'7" Top length (A) 31.5"
Side length (B) 56 cm Side length (B) 1'10" Side length (B) 22"
Order size XS
Top length (A) 86 cm Top length (A) 2'9" Top length (A) 33.9"
Side length (B) 59 cm Side length (B) 1'11" Side length (B) 23.2"
Order size S
Top length (A) 92 cm Top length (A) 3'0" Top length (A) 36.2"
Side length (B) 62 cm Side length (B) 2'0" Side length (B) 24.4"
Order size M
Top length (A) 97 cm Top length (A) 3'2" Top length (A) 38.2"
Side length (B) 62 cm Side length (B) 2'0" Side length (B) 24.4"
Order size L
Top length (A) 101 cm Top length (A) 3'3" Top length (A) 39.8"
Side length (B) 62 cm Side length (B) 2'0" Side length (B) 24.4"
Order size XL
Top length (A) 106 cm Top length (A) 3'5" Top length (A) 41.7"
Side length (B) 67 cm Side length (B) 2'2" Side length (B) 26.4"

All sizes in the size chart are measured with the utmost care. The sizes may differ slightly from the actual product. You cannot derive any rights from this size chart.