Works well with this companies Chewy tubes. Glad I have discovered this company.
Extra cords for ARK's chew necklaces|||Breakaway clasp necklace cords, sold in a pack of 2.
Caution: This product is not a toy. The clasp and cord are not intended for chewing. Contains small parts that may pose a choking hazard - please supervise at all times. Recommended for age 5 years and up.