This is very serious material. It is flexible and has venting which works well on my vintage Icon Performance Series Jacket. The Icon came with ForceField Armour off the shelf, something you don't normally find. This is a big improvement over the original pieces that came with the jacket especially the back protector. I replaced the shoulder and elbow pieces too for an all around level two protection upgrade although the they were already better protection than the original back protector. Seems to be common with the expensive jackets not just the less expensive jackets to cheap out on back protection. Great prices from STG and shipping was included.