Horseware Amigo Hero 6 Petite Plus Medium Size:3'3 A donut allows just enough

A donut allows just enough stretch to slide the neck strap through to avoid the length from sliding out of control

The liner has a single front closure with two Velcro loop attachments around the neck and two clips at the back corners of the rug to secure liner into outer rug and prevent slipping

In other words

and these are its boots

Horseware Amigo Hero 6 Petite Plus Medium Size:3'3 A donut allows just enoughThe Tiny turnout for petite equines! Made from a strong, waterproof and breathable 600d outer with anti bacterial, shine enhancing lining and 200g fibrefill for warmth. Features include: Horseware's specialised design for miniature equines double front closures front leg arches for freedom of movement cross surcingles a detachable neck hood as standard