The Pro Spotter Pad is a super versatile supplement pad which opens up in multiple ways. First of all the pad can be, in its most traditional sense, a sit start pad. The true magic to the pad starts once you've opened the outer zipper to find the contents of the inner pad. The secret surprise inside is a folded pad which operates as a "pile pad", smartly designed to lay over all the pads in the stack covering the gaps between the pads.
The pad is filled entirely with closed cell foam. It is a firm as a 3 inch pad, and works perfectly as a sit start pad or as a bouldering spotter shield.