Horseware® Grand Prix Mack in a Sack. Waterproof coverup for your horse. Don’t get caught ring side in the rain again! Waterproof and breathable with a full neck design. Stirrup slits, belly straps and tail cord. Comes with handy storage bag. (If using as a throw over your saddle we recommend that you buy one size larger.) Size Small- XL
| MACK IN A SACK SIZE | HORSE SIZE |
|---|---|
| Small | 66″ – 69” |
| Medium | 72″ – 75” |
| Large | 78″ – 81” |
| X-Large | 84″ – 87” |








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