Yilove silicon coffee cup lid for ceramic travel Coffee Mug,4 Pack Cup Cover BPA-FREE, Anti-dust, Spill Proof. Cup Covers Keep The Dust, Pet Hair and Dander Out of Drinks. Made of Bpa Free Food Grade Silicone. No Smell, Durable And Safe. Sip Through Hole is Easy to Drink From While on The Go. Fit The Container Mouth with Outer Diameter Among 88mm~90mm(3.46~3.54).