That's what I really really really like about the Tekvest... The armor's soft enough that its flexible, making it less restrictive than a hard-plastic roost guard, but still durable enough that it offers pretty damn good impact protection from sharp pointys or handlebars. Kind of the best of both worlds. UHMW's the plastic used in there, it's the same stuff used in rail car liners and cutting boards if that tells you anything about its abrasion/cut resistance too. I tried some of those foam "armor" impact-suit setups... the protection and coverage it offered was laughable at best. My race vest has another 1/8" of UHMW over the chest and back in addition to the "sandwich" of armor pictured above.