KIDS SAFE GUARD: this helmet is adopting firm "IN MOLD" structure, hot pressing shell on the high density foam. not like other common ones use tape or glue. which is light and shock-absorbed. cushioning impact damage, fitted design to reduce your child risk of injury while biking on or off road FUN 3D DESIGN: FUYUE is lead of using full 3D technology on the helmet sharp to catch children's eyes, standing out in the bland helmet. makes your preschool kids or toddler WANT to wear their helmets while cycling or on their roller skate, scooter and blance bike. Boys and girl will LOVE the little dinosaur. ADJUSTABLE SIZE: ADJUSTS from 51-55cm,With the fit dial, it is easy to adjust vertically and horizontally for a better fit for both toddlers and preschoolers. It may doesn't fit kids over 8 years old. COMFORTABLE - Lightweight only 280g , like three eggs , with an integrated visor and 14 vent holes ,allow hot sweat to escape in time for cooling air flow even in the hot summer The Soft STRAPS are fully adjustable and the quick-release clip keeps the helmet securely . SPECIAL : Natuway dinosaur helmet is built with a security light at the rear of the helmet. This will warn others to watch out for your kid in the twilight.it required 1 pcs CR3032 battery, Not included in helmet. ADJUSTABLE SIZE: ADJUSTS from 51-55cm,With the fit dial, it is easy to adjust vertically and horizontally for a better fit for both toddlers and preschoolers. It fit 5+ years old. UNICORN Gifts For Girls -- Best Gifts to your kids. FUYUE 3D Design is so cute and kawaii.The pink one deeply loved by All girls.and protect them during outdoor and indoor sports ,Best Gifts for 2 3 4 5 6 7 year old girls.