best kids mountain bike helmet SIFVO for Boys and Girls Ages 8-14 Adjustable Youth Helmet with Detachable Visor Lightweight, Safe & Stylish Cycling Bicycle Helmets for Kids 54-57cm : Sports & Outdoors and comes in a Stylish Wicker Basket Panniers 20%-39% Size:18" × 18''

best kids mountain bike helmet SIFVO for Boys and Girls Ages 8-14 Adjustable Youth Helmet with Detachable Visor Lightweight, Safe & Stylish Cycling Bicycle Helmets for Kids 54-57cm : Sports & Outdoors and comes in a Stylish Wicker Basket Panniers 20%-39% Size:18" × 18''

Stylish Wicker Basket Panniers for a Vintage Bicycle | Electra rattan pannier basket, Wicker basket bicycle

Helmet Laws, Higher Helmet Use Among parents whose children ride bicycles, 36% indicated they live in an area that has a state or local bicycle helmet law, 23% said there is no helmet law and 41% are unsure about bicycle helmet laws in their community

20%-39%

Size:18" × 18''

On the other hand, there are a lot of third party accessories that you can buy for each of these brands

and comes in a stylish Crystal White color.