Razor Dirt Quad Bike "www" Questions

...should not be a weight or overheating issue. The second one with a heavier child works find. ...

...are rated for commercial use. The rest are sport models.. The link here is for their site.. http://www.petzl.com/en/pro/helmets Any half decent outdoor/climbing shop will be able to sort you out.

...Vent.. See the link below for more info.. It's not worth the risk for a few quid less.. ...

...to stick with the ecrin as the next grade up (pezle meteor) was just not right for me. ...