The sunglasses are with revolutionary soft silicon and unbreakable materials, and the frames perfectly resolve the breaking issues. Our product is safe for your children to wear. Conveniently attached strap adjusts to the baby’s head size and securely holds the sunglasses in place, providing an excellent fit. Coating coating 100% UV400 polarized lenses can effectively block harmful UVA/UVB rays and other harmful rays, protecting the eyes of babies and kids from ultraviolet rays when they are outdoors.