Adjustable Dog Collar in Black with Valentines Large Red Hearts (Handmade in the U.s.a.) Medium collar: measures 10-16" length x 3/4" width for 20-44 lbs dogs All of our adjustable dog collars are handmade in the U.S.A. Collars are made with strong durable nylon core and covered with a fun unique 100% cotton fabric pattern CritterGear Dog collars are all Machine Washable We guarantee all of our hardware on your collar.