This is a soft fabric Elizabethan collar (cone). It's light and soft, so it didn't hinder movement and seemed comfortable for resting. The size of the neck opening can be adjusted to some extent with the Velcro strap. (For reference, it was used on a 2kg [4.4 lbs] pet) Size (approximate measurements): Neck circumference: Approximately 22-23cm (8.7-9.1 inches) Width: Approximately 9-9.5cm (3.5-3.7 inches) (see photo 9) Thickness: Approximately 3cm (1.2 inches) Weight: Approximately 88g (3.1 oz) It was only used for one week, so it's in clean condition with no noticeable scratches or stains. (It has been washed once) Please consider purchasing if you understand the condition described above.