Reins

Reins are the straps running from the bit to the rider's hands.

What is it for?

They form the link through which the rider keeps hand contact with the horse.

Reins come in leather, rubber, webbing or braided material. A double bridle or pelham uses two pairs of reins at once.

Sources: British Horse Society · The Pony Club (UK). Descriptive only; not care or training advice.