Designed by moms with baby toddlers in mind, we use the latest technology to make these sunglasses super comfortable for your child! Virtually unbreakable, super lightweight, durable TPEE frames. BPA, Phthalate, PVC free. Conforms to CPSIA standards. Shatter-resistant TAC lenses that reduces glare. 100% UVA UVB sun protection with UV 400 lenses. Each pair comes with a removable and adjustable strap.