Bridleway nylon side reins
RRP £9.95
bridlewayequestrian.com
The buckles attach to the side rings on a roller and the sprung clips to the bit. If your horse tries to extend his nose beyond the length of the side reins, which should be no tighter than just ahead of the vertical, he’ll feel resistance on the bit

Showmaster elastic body strap
RRP £9.99
kramer.co.uk
An elasticated, adjustable strap that attaches to the roller and passes around your horse’s hindlegs above his hocks. The aim is to encourage him to engage his hindquarters when working.

Shires Harbridge nylon training aid
RRP £11.95
shiresequestrian.com
The leather loop at the end fits around the roller like a martingale would, and the two elasticated, adjustable straps attach to the bit rings with sprung clips. The aim is to encourage your horse to work with his head lower and stretch through his topline.

Kincade De Gogue
RRP £19.99
equestrian.com
The leather loop of the chest piece attaches around the roller under his belly, and a leather headpiece fastens over the top of the cavesson. Ropes run from the chest piece, through rollers on the headpiece, through the bit and attach to the ring extending from the chest piece. The aim is to encourage self carriage, as the pressure on the poll and mouth is released when your horse is working correctly.

Hy Chambon
RRP £22
hy-equestrian.com
The adjustable leather loop at the base of the chambon fits around the roller under his belly and the leather headpiece fastens over the top of the cavesson. Ropes run from the chest piece, through rollers on the headpiece and fasten to the bit with sprung clips. The aim is to encourage your horse to work long and low from pressure on the poll and mouth, which is released when he lowers his head.

EquiAmi standard lunging aid
RRP £65
equiami.com
Using a system of ropes that thread through the bit and attach onto the roller, it encourages your horse to engage his hindquarters and soften and lower his head – it’s not fixed so he can’t lean on it.

TSR Training System
RRP £90
johnwhitaker.com
Using a system of roller attachments for the ropes, this training aid can be used in different positions depending on how you would like your horse to work. It aims to encourage him to engage his hindquarters and find the correct balance.