This toy does double duty! Each bunny ear looped fabric is backed with super soft snuggle fabric and has baby *crinkle paper sewn in for added sensory play.(Every wooden ring is rubbed in a small amount of organic coconut oil) *USA Safety Certified EN71 and CPSIA Crinkle Fabric *Our teething rings have been tested and passed all of the CPSC product safety regulations: CPSIA Section 106 & ASTM F963-11 Section 4.3.5.2, Soluble Heavy Metals Content in Substrates Chemicals tested: Antimony, Arsenic, Barium, Cadmium, Chromium, Lead, Mercury, Selenium (ALL PASS) CPSIA Section 102 & 16 1501, Small Parts CPSIA Section 106, ASTM F963-11 & 16 CFR 1500 (FHSA), Mechanical Hazards Impact, Torque, Tension, Compression (ALL PASS) ASTM F963-11 Sec 4.1 Material Quality - PASS ASTM F963-11 Sec 4.6 Small Objects - PASS ASTM F963-11 Sec 4.9 & 16 CFR 1500.48Accessible Points - PASS.ASTM F963-11 Sec 4.18 Holes,ClearancesPASS ASTMF963-11 Sec 4.22 Teethers and Teething Toys - PASS