21st Century's Protective E Collar

Available Sizes:

Small: 5.75 in-9.5 in (0.01 lb)
Medium: 7.25 in-12.25 in (0.13 lb)
Large: 9.5 in-5.5 in (0.22 lb)
X-Large: 12.25 in-21 in (0.35 lb)
XX-Large: 15.25 in-25 in (0.56 lb)