The Trust Equestrian Inno Sense Soft Flexi Loose Ring Snaffle has a ported mouthpiece with loose rings.

The synthetic ported mouthpiece is ergonomically shaped to allow space for the horse's tongue, and is available in Medium or Hard densities.

Please note that this bit comes with rubber bit rings.

Available in 12.5cm (just under 5in), 13.5cm (5 1/4in) or 14.5cm (5 3/4in).