Holiday Plaid Pet Collars - Set Of 2 This adorable 2-piece set includes a plaid bow tie collar and a plaid tie with a white shirt collar. Both have adjustable sizing and a side release buckle closure. Choose Small/Medium for dogs with up to 20" neck circumference or Med/Large for up to 28" circumference. Material: Polyester; imported. Available in Small/Medium or Medium/Large.