TIOGA UNDERCOVER STRATUM TITANIUM BLACK3 layered design offers an extremely plush feel, while also offering support during movement and extremely low weight Unique cutouts on the base designed to compress upon impact and quickly rebound for continuous shock absorption without the need for excess padding Flexile web structure conforms to you when seated, flexes when soaking up energy from bumps, and remains pliable to continually absorb shock ReActiv foam is an open cell foam that`s softer,