MSRP: $90
There is a reason the Ecrin Roc is the most rented helmet in the world: it is nearly indestructible (more than we can say for our noggins), extremely adjustable and unquestionably comfortable. Yeah, there are less expensive, lighter-weight options out there, but the Petzl classic has been relied upon countless times and for numerous years by guides, clients, kids, etc. Its dial-adjustment system works for all type of head shapes: mongoloid, egghead, pinhead, and so on. Combine it with a bicycle-style helmet, and your quiver is good to go for all adventures.