Ease the burden of the cost of a Full Set of Harness, why not consider a part set, in this case 'front end' consisting of a SL Std Bridle, Single Reins, Breastplate & Traces.
Breastplate Sizes: Mono 72cm, Shetland/Sml Pony 81cm
Traces Size: Mini 115cm or 130cm, Shetland 145cm, Sml Pony 160cm
Available in Mini, Shetland or Small Pony Sizes