The shell is doubled with abrasion-resistant urethane at the corners -where most pads wear out first.

The first three inches of the pad are made up of the high-density, open-cell foam standard in most pads.

Carry system: If you're carrying your pad more than five minutes, you want backpack straps ( most pads have these).

Construction Most pads utilize three layers of foam that serve different purposes but work together.

Most pads offer flap closure systems to secure gear.