Our teether is a combination of silicone beads and beech wood beads. The beech wood beads can be treated with avocado oil or organic coconut oil to keep it enticing to your little ones. The colorful silicone beads does not only keep your baby engaged but helps sooth their aching gums. The pure silicone beads teether are freezer safe and can be more enticing to those swollen gum. ALL of our teether are NOT dishwasher safe.