Ordered size medium in pink for my 4.6 lb shorkie. I felt the pink looked less severe as a muzzle isn't a very pleasant thing to see on a dog. Measure carefully as the item fits small. The medium fits her nicely but she can easily work it off her head with her paws if you don't use the loop provided in conjunction with a tight collar. It would have been easier if the loop had a snap opening rather than having to undo her collar to slide it on.
Package was due, at the latest, on May 15th but arrived May 21st. MITB was very accommodating regarding solutions for the late delivery but package ultimately arrived so I didn't need to take advantage of the offer of reshipping or reimbursement via a coupon.
No duty charged.