Luoxin Baseca Elastic Adults Road Mountain Bike Cycling Helmet Men/Women bu+w+b Ultralight bike helmet weight about 8oz that you can barely feel this on you head,but also built extremely sturdy. This helmet is adjustable to provide a perfect fit for adults,very wide range of adjustment of size wise.The adjustable wheel and straps are easy to made adjustable while on you head. The mesh insert is very adequate to provide cushion and comfy at the same time,the wide spreader mesh provides good ventilation and keep the whole insert together. the streamlined design is great,easy to wiped clean.additional nice touch is that there is padded coever for the chin strap under the chin, which is quit comfy. The interior foam will provide enough protection,and enough rigidity and padding to protect you if you take a spill off bike.