Westernway Catching straps
Colours to match head collars. (ideally to be sold with those)
Made in 20mm width (for foal size head collars) £1.55 free p&p Colours to match head collars.
OR Detachable strap, with velcro strip. Made in 25mm width (for adult size head collars) £1.85 free p&p. (see this link)