Extremely durable hard plastic outer shell with 1/2" closed cell foam pad inside for ultimate comfort.• Blue non-marking grip-strip provides the user the security and grip it needs in a knee pad without leaving marks or residue on your work area.• Hinged with metal rivet for ease of movement while kneeling or walking.• Soft elastic woven straps with reinforced sewn ends are attached well above and below the knee.• Will not bind behind knee.• Lightweight for all-day use.• Speed-clips allow for quick attachment and adjustments.