Help your horse move and jump more freely. Without the leg strap that goes to the girth, the Free Motion Breastplate moves with the horse and without shoulder restriction. 
 
Sizing:
Small/ Pony or Petite and narrow horse fits most horses 13.0-15.0 Hands (137cm-160cm)
Medium/Full size fits most horses 15.3-16.2 Hands (160cm-170cm)
Large/X-Full size fits most horses 16.3 Hands (170cm) and up