For pole vault standards: Protect standards, poles and competitors from harm with this pole vault standard accessory. Padding fits snug around the standard facing the inside of the pit. Open in the back to allow for setting of height and access to tightening knob. High density foam with vinyl casing.For hammer cage: Encases the front half of the top horizontal member of the cage door to provide damage protection and to minimize hammer rebound. Vinyl encased high density foam. Gill hammer cages include two pads. Tall hammer cages include four pads.