The FAT BOY surcingle is for the 800-900 LB pony thats in between a saddle horse and a mini pony or Donkey.

side straps are included for extra length on the sides to attach to the side straps on the manure bag, if needed.

Girth- 60 inches W/ 2 inch overlap

Back straps-minimum 15 inch/Max 28 inch

Side strap extensions-minimum 16 inch/Max 24 inch