This very basic waistbelt just elastic with velcro.

Size Chart:

XS: Neck = 8-9.5” Waist =11.5”-13.5” Length = 9”-11”
S: Neck = 10-11.5” Waist = 14”-16” Length = 11”-12.5”
M: Neck = 12-13.5” Waist = 16.5”-19.5” Length = 13”-14.5”
Frenchie / Pug: Neck = 14-15” Waist =20”-24” Length = 13”-15” Sportswear and Accessories