New England Patriots Premium NFL Pet Dog Alternate Jersey w/Name Tag RED (Small) XS - Neck 10"; Length 10"; Girth 16" (for some Chihuahuas/Teacup Yorkies) Small - Neck 12"; Length 11"; Girth 20" (for some Shih Tzus/Lhasa Apsos) Medium - Neck 14"; Length 15"; Girth 24"(for some French Bulldogs/Pugs/Jack Russells) Large - Neck 16"; Length 18"; Girth 27" (for some Cocker Spaniels/Schnauzers) XL - Neck 18"; Length 21"; Girth 32" (for some Boxers/Collies/small Labs)