Synthetic Treeless Saddles are a wonderful option for the budget minded. All Black Forest Synthetic Treeless Saddles have an ingenious built in moveable cantle on the Size 0/1 for both models. This moveable cantle allows the saddle to be quickly resized for small children. This feature has been amazing for Families with growing children and lesson programs. This saddle will grow with your child and will easily fit any size horse or pony.